{"title":"Rotating Assembly","description":"\u003cdiv class=\"collection-description\"\u003e\n\u003ch2\u003eEngine Rotating Assembly — Pistons, Cranks, Rods \u0026amp; Balancers\u003c\/h2\u003e\n\u003cp\u003eThe rotating assembly is the mechanical heart of any performance engine. Pistons, crankshafts, connecting rods, piston rings, and harmonic balancers work together as a precisely engineered system that converts the chemical energy of combustion into rotational force. Getting these components right — matched to your intended bore size, stroke, compression ratio, and power level — is the difference between an engine that makes power reliably for years and one that fails prematurely or never reaches its potential.\u003c\/p\u003e\n\u003cp\u003eWith over 520 rotating assembly products in our range from leading specialists including Wiseco, Diamond Pistons, Mahle, Brian Tooley Racing, and Callies, Billy's Speed Shop has the components to support everything from a mild street rebuild to a high-compression naturally aspirated race engine or a stout boosted combination.\u003c\/p\u003e\n\u003ch3\u003ePistons — The Foundation of Compression and Power\u003c\/h3\u003e\n\u003cp\u003ePiston selection is one of the most critical decisions in any engine build. The wrong piston — whether too heavy, the wrong compression height for your rod and stroke combination, or manufactured to inadequate tolerances — will limit power, increase wear, or in serious cases cause catastrophic failure. Our piston range covers the full spectrum of American V8 applications.\u003c\/p\u003e\n\u003cp\u003eForged pistons from specialists like Wiseco and Diamond Pistons offer the strength-to-weight ratio demanded by high-performance and forced induction applications. Forging aligns the grain structure of the aluminium, producing a component that can withstand the mechanical and thermal stresses of high boost, high compression, or high-RPM operation far beyond the capability of cast alternatives. Our forged piston range covers popular LS, LT, Small Block Chevy, Big Block Chevy, and Ford bore sizes with multiple compression ratio options to suit naturally aspirated builds and boosted applications alike.\u003c\/p\u003e\n\u003cp\u003eHypereutectic and cast pistons serve street and mild performance applications where extreme duty isn't required — offering excellent durability, good thermal properties, and lower cost for engines that will see regular street use within normal power levels.\u003c\/p\u003e\n\u003ch3\u003eCrankshafts — Stroke, Material, and Balance\u003c\/h3\u003e\n\u003cp\u003eThe crankshaft defines your engine's stroke and therefore, alongside bore diameter, its displacement. A quality crankshaft must be dimensionally accurate, properly balanced, and manufactured from material appropriate to your power level and intended use. Our crankshaft range covers standard-stroke and stroker applications across the major American V8 families, with options in cast iron for mild builds and forged steel for high-performance applications where rotating mass strength is non-negotiable.\u003c\/p\u003e\n\u003cp\u003eStroker crankshafts allow you to extract additional displacement from an existing block — a 350 Small Block Chevy becomes a 383 or 400+ cubic inch combination with the right crank, rod, and piston selection. This approach delivers the low-end torque and mid-range pulling power that makes a street-driven performance car or truck both exciting and usable in real-world conditions.\u003c\/p\u003e\n\u003ch3\u003ePiston Rings — Sealing, Oil Control, and Power Retention\u003c\/h3\u003e\n\u003cp\u003ePiston rings perform three critical functions: sealing combustion pressure, controlling oil consumption, and transferring heat from the piston to the cylinder wall. A quality ring set matched to your bore diameter and surface finish is essential for both initial engine performance and long-term durability. We stock ring sets for standard and oversized bore applications across popular American V8 families, with options suited to both standard honing and performance plateau honing finishes.\u003c\/p\u003e\n\u003ch3\u003eHarmonic Balancers — Protecting Your Crankshaft\u003c\/h3\u003e\n\u003cp\u003eA harmonic balancer — also known as a crankshaft damper — absorbs the torsional vibrations produced by combustion pulses acting on the crankshaft. Without a properly functioning balancer, these vibrations accumulate and can cause crankshaft fatigue and failure, particularly in high-performance applications running elevated RPM for extended periods. We stock OEM-specification replacement balancers, high-performance units with enhanced damping characteristics for modified engines, and SFI-certified dampers for competition use where safety regulations require them.\u003c\/p\u003e\n\u003ch3\u003eCrankshaft Pulleys and Related Hardware\u003c\/h3\u003e\n\u003cp\u003eCrankshaft pulleys, pulley spacers, and related hardware complete the front-of-engine package. Correct pulley selection ensures proper belt alignment with your accessory drive components, and the dimensional accuracy of billet and precision-machined pulleys in our range eliminates the belt wear and noise issues that can result from inferior components.\u003c\/p\u003e\n\u003c\/div\u003e","products":[{"product_id":"d560-0001","title":"Kit de poulie de vilebrequin sous-multipliée Dinan - BMW M5\/M6","description":"Sous-multiplication de 13 % - Aluminium usiné - E60\/E63\/E64\u003cul\u003e\n\n\u003cli\u003e Tous les accessoires sont sous-alimentés de 13 % afin de réduire la résistance du moteur.\u003c\/li\u003e\n\n\u003cli\u003e Poulie de vilebrequin légère en aluminium usiné, anodisée noire et gravée.\u003c\/li\u003e\n\n\u003cli\u003e Comprend le matériel de montage et des courroies plus courtes.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"Dinan","offers":[{"title":"Default Title","offer_id":50548021231910,"sku":"D560-0001","price":386.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/D560-0001_1.jpg?v=1776352864"},{"product_id":"97-159","title":"Poulie de vilebrequin de remplacement","description":"Compatible uniquement avec les variateurs d'accessoires LS1, 2, 3 et 6 à montage central\u003cul\u003e\u003cli\u003e Pièces de qualité Holley authentiques\u003c\/li\u003e\u003c\/ul\u003e","brand":"Holley","offers":[{"title":"Default Title","offer_id":50560215318822,"sku":"97-159","price":189.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/19d2cb1ac5799bd93d8ce4d858e845e631717d32_f53e6f65-1ff1-4903-b7b7-157fff7cb85e.jpg?v=1757066926"},{"product_id":"97-161","title":"Poulie de vilebrequin de remplacement","description":"Compatible uniquement avec les variateurs d'accessoires LT1 à montage central\u003cul\u003e\u003cli\u003e Pièces de qualité Holley authentiques\u003c\/li\u003e\u003c\/ul\u003e","brand":"Holley","offers":[{"title":"Default Title","offer_id":50560215417126,"sku":"97-161","price":234.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/4de7cf2bb0cbe97e0c9f1b633df07968189a69b8_8eda5115-657b-46d2-8179-c2cde85a4855.jpg?v=1757066925"},{"product_id":"97-191","title":"Ensemble amortisseur\/moyeu de remplacement","description":"Compatible uniquement avec les entraînements d'accessoires LS7 à montage central\u003cul\u003e\u003cli\u003e Pièces de qualité Holley authentiques\u003c\/li\u003e\u003c\/ul\u003e","brand":"Holley","offers":[{"title":"Default Title","offer_id":50560219644198,"sku":"97-191","price":676.66,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/417448fd9382f0efc209de4284b9ab7db29455c5_529cab03-f6b4-49f0-8e66-5f1b85661a3d.jpg?v=1757066906"},{"product_id":"97-205","title":"Ensemble amortisseur\/moyeu de remplacement","description":"Compatible avec les entraînements d'accessoires Holley GM LS à montage central\u003cul\u003e\u003cli\u003e Pièces de qualité Holley authentiques\u003c\/li\u003e\u003c\/ul\u003e","brand":"Holley","offers":[{"title":"Default Title","offer_id":50560220397862,"sku":"97-205","price":321.66,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/31dae3affb2afc76411f1832cc4cb721011af7f3_987c0d0d-72b5-401f-a313-84b02ee6bff4.jpg?v=1757066904"},{"product_id":"97-317","title":"Poulie de vilebrequin de remplacement - 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Features include--\u003cbr\u003e\n- Balanced to + or – 1 gram\u003cbr\u003e\n- Dual forced pin oilers\u003cbr\u003e\n- Accumulator Grooves\u003cbr\u003e\n- Forged side relief\u003cbr\u003e\n- .185\" Wall Chromoly wrist pins with wire locks\u003cbr\u003e\n- FEA designed forging\u003cbr\u003e\n- Tight tolerances\u003cbr\u003e\n- Premium Total Seal AP ring set included (Comes standard with 1.2mm x 1.2mm x 3.0mm ring pack that consists of 440B Stainless Steel Tops with a C33 Face Coating, Taper Hook Groove Napier second rings and a 3-piece soft-nitrided rail flex vent oils, specially designed for severe duty applications such as nitrous blowers and turbo engines.)\u003c\/p\u003e","brand":"Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":52041467527462,"sku":"BTRCP-HEMI40951125-FT-8","price":999.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/hemi40901125ft1_3_1.jpg?v=1770811500"},{"product_id":"btr-cp-piston-and-ring-set-gen-iii-iv-ls-3-780-bore-3-622-stroke-6-125-rod-2cc-flat-top-btrcp-ls37801300-ft-8","title":"BTR Cp Piston \u0026 Ring Set - GEN III\/IV LS - 3.780\" Bore - 3.622\" Stroke - 6.125\" Rod - 2CC Flat Top","description":"\u003cp\u003eBTR has joined forces with CP-Carrillo and Total Seal to offer a new solution for Gen III Hemi and LS\/LT engine builders looking for a tough boost-ready piston kit featuring high-quality American made components at a price that won't break the bank! All pistons are made in the USA, manufactured from 2618 alloy for strength and durability. Features include--\u003cbr\u003e\n-Balanced to + or – 1 gram\u003cbr\u003e\n-Dual forced pin oilers\u003cbr\u003e\n-Accumulator Grooves\u003cbr\u003e\n-Forged side relief\u003cbr\u003e\n-Heavy Wall .200\" Chromoly wrist pins with wire locks\u003cbr\u003e\n-FEA designed forging\u003cbr\u003e\n-Tight tolerances\u003cbr\u003e\n-Premium Total Seal AP ring set included (Comes standard with 1.2mm x 1.2mm x 3.0mm ring pack that consists of 440B Stainless Steel Tops with a C33 Face Coating, Taper Hook Groove Napier second rings and a 3-piece soft-nitrided rail flex vent oils, specially designed for severe duty applications such as nitrous blowers and turbo engines.)\u003c\/p\u003e","brand":"Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":52041467592998,"sku":"BTRCP-LS37801300-FT-8","price":999.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/ls37801300ft1_2.jpg?v=1770811502"},{"product_id":"btr-cp-piston-and-ring-set-gen-iii-iv-ls-3-800-bore-3-622-stroke-6-125-rod-2cc-flat-top-btrcp-ls38001300-ft-8","title":"BTR Cp Piston \u0026 Ring Set - GEN III\/IV LS - 3.800\" Bore - 3.622\" Stroke - 6.125\" Rod - 2CC Flat Top","description":"\u003cp\u003eBTR has joined forces with CP-Carrillo and Total Seal to offer a new solution for Gen III Hemi and LS\/LT engine builders looking for a tough boost-ready piston kit featuring high-quality American made components at a price that won't break the bank! All pistons are made in the USA, manufactured from 2618 alloy for strength and durability. Features include--\u003cbr\u003e\n-Balanced to + or – 1 gram\u003cbr\u003e\n-Dual forced pin oilers\u003cbr\u003e\n-Accumulator Grooves\u003cbr\u003e\n-Forged side relief\u003cbr\u003e\n-Heavy Wall .200\" Chromoly wrist pins with wire locks\u003cbr\u003e\n-FEA designed forging\u003cbr\u003e\n-Tight tolerances\u003cbr\u003e\n-Premium Total Seal AP ring set included (Comes standard with 1.2mm x 1.2mm x 3.0mm ring pack that consists of 440B Stainless Steel Tops with a C33 Face Coating, Taper Hook Groove Napier second rings and a 3-piece soft-nitrided rail flex vent oils, specially designed for severe duty applications such as nitrous blowers and turbo engines.)\u003c\/p\u003e","brand":"Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":52041467658534,"sku":"BTRCP-LS38001300-FT-8","price":999.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/ls37801300ft1_2_1_de7b7b6c-ccc2-47ad-8628-338bd8a6b380.jpg?v=1770811503"},{"product_id":"btr-cp-piston-and-ring-set-gen-iii-iv-ls-4-000-bore-4-000-stroke-6-125-rod-8cc-dish-btrcp-ls40001115-dsh-8","title":"BTR Cp Piston \u0026 Ring Set - GEN III\/IV LS - 4.000\" Bore - 4.000\" Stroke - 6.125\" Rod - 8CC Dish","description":"\u003cp\u003eBTR has joined forces with CP-Carrillo and Total Seal to offer a new solution for Gen III Hemi and LS\/LT engine builders looking for a tough boost-ready piston kit featuring high-quality American made components at a price that won't break the bank! All pistons are made in the USA, manufactured from 2618 alloy for strength and durability. Features include--\u003cbr\u003e\n- Balanced to + or – 1 gram\u003cbr\u003e\n- Dual forced pin oilers\u003cbr\u003e\n- Accumulator Grooves\u003cbr\u003e\n- Forged side relief\u003cbr\u003e\n- Heavy Wall .200\" Chromoly wrist pins with wire locks\u003cbr\u003e\n- FEA designed forging\u003cbr\u003e\n- Tight tolerances\u003cbr\u003e\n- Premium Total Seal AP ring set included (Comes standard with 1.2mm x 1.2mm x 3.0mm ring pack that consists of 440B Stainless Steel Tops with a C33 Face Coating, Taper Hook Groove Napier second rings and a 3-piece soft-nitrided rail flex vent oils, specially designed for severe duty applications such as nitrous blowers and turbo engines.)\u003c\/p\u003e","brand":"Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":52041467691302,"sku":"BTRCP-LS40001115-DSH-8","price":999.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/ls40001115dsh1_2.jpg?v=1770811506"},{"product_id":"btr-cp-piston-and-ring-set-gen-iii-iv-ls-4-030-bore-3-622-stroke-6-125-rod-2cc-flat-top-btrcp-ls40301300-ft-8","title":"BTR Cp Piston \u0026 Ring Set - GEN III\/IV LS - 4.030\" Bore - 3.622\" Stroke - 6.125\" Rod - 2CC Flat Top","description":"\u003cp\u003eBTR has joined forces with CP-Carrillo and Total Seal to offer a new solution for Gen III Hemi and LS\/LT engine builders looking for a tough boost-ready piston kit featuring high-quality American made components at a price that won't break the bank! All pistons are made in the USA, manufactured from 2618 alloy for strength and durability. Features include--\u003cbr\u003e\n- Balanced to + or – 1 gram\u003cbr\u003e\n- Dual forced pin oilers\u003cbr\u003e\n- Accumulator Grooves\u003cbr\u003e\n- Forged side relief\u003cbr\u003e\n- Heavy Wall .200\" Chromoly wrist pins with wire locks\u003cbr\u003e\n- FEA designed forging\u003cbr\u003e\n- Tight tolerances\u003cbr\u003e\n- Premium Total Seal AP ring set included (Comes standard with 1.5mm x 1.5mm x 3.0mm ring pack that consists of 440B Stainless Steel Tops with a C33 Face Coating, Taper Hook Groove Napier second rings and a 3-piece soft-nitrided rail flex vent oils, specially designed for severe duty applications such as nitrous blowers and turbo engines.)\u003c\/p\u003e","brand":"Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":52041467724070,"sku":"BTRCP-LS40301300-FT-8","price":999.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/ls40301115ft1_2_1.jpg?v=1770811508"},{"product_id":"btr-cp-piston-and-ring-set-gen-iii-iv-ls-4-030-bore-4-000-stroke-6-125-rod-2cc-flat-top-btrcp-ls40301115-ft-8","title":"BTR Cp Piston \u0026 Ring Set - GEN III\/IV LS - 4.030\" Bore - 4.000\" Stroke - 6.125\" Rod - 2CC Flat Top","description":"\u003cp\u003eBTR has joined forces with CP-Carrillo and Total Seal to offer a new solution for Gen III Hemi and LS\/LT engine builders looking for a tough boost-ready piston kit featuring high-quality American made components at a price that won't break the bank! All pistons are made in the USA, manufactured from 2618 alloy for strength and durability. Features include--\u003cbr\u003e\n- Balanced to + or – 1 gram\u003cbr\u003e\n- Dual forced pin oilers\u003cbr\u003e\n- Accumulator Grooves\u003cbr\u003e\n- Forged side relief\u003cbr\u003e\n- Heavy Wall Chromoly wrist pins with wire locks\u003cbr\u003e\n- FEA designed forging\u003cbr\u003e\n- Tight tolerances\u003cbr\u003e\n- Premium Total Seal AP ring set included (Comes standard with 1.2mm x 1.2mm x 3.0mm ring pack that consists of 440B Stainless Steel Tops with a C33 Face Coating, Taper Hook Groove Napier second rings and a 3-piece soft-nitrided rail flex vent oils, specially designed for severe duty applications such as nitrous blowers and turbo engines.)\u003c\/p\u003e","brand":"Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":52041467756838,"sku":"BTRCP-LS40301115-FT-8","price":999.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/ls40301115ft1_2_55b2a10b-b7ff-43bc-a75d-7a8a70b08c25.jpg?v=1770811508"},{"product_id":"btr-cp-piston-and-ring-set-gen-iii-iv-ls-4-125-bore-3-622-stroke-6-125-rod-3cc-flat-top-btrcp-ls41251300-ft-8","title":"BTR Cp Piston \u0026 Ring Set - GEN III\/IV LS - 4.125\" Bore - 3.622\" Stroke - 6.125\" Rod - 3CC Flat Top","description":"\u003cp\u003eBTR has joined forces with CP-Carrillo and Total Seal to offer a new solution for Gen III Hemi and LS\/LT engine builders looking for a tough boost-ready piston kit featuring high-quality American made components at a price that won't break the bank! All pistons are manufactured from 2618 alloy for strength and durability. Features include--\u003cbr\u003e\n-Balanced to + or – 1 gram\u003cbr\u003e\n-Dual forced pin oilers\u003cbr\u003e\n-Accumulator Grooves\u003cbr\u003e\n-Forged side relief\u003cbr\u003e\n-Heavy Wall .230\" Chromoly wrist pins with wire locks\u003cbr\u003e\n-FEA designed forging\u003cbr\u003e\n-Tight tolerances\u003cbr\u003e\n-\u003cbr\u003e\nLateral gas ports for improved ring seal\u003cbr\u003e\n- 2000hp rated\u003cbr\u003e\n-Premium Total Seal AP ring set included (Comes standard with 1.2mm x 1.2mm x 3.0mm ring pack that consists of 440B Stainless Steel Tops with a C33 Face Coating, Taper Hook Groove Napier second rings and a 3-piece soft-nitrided rail flex vent oil rings, specially designed for severe duty applications such as nitrous blowers and turbo engines.\u003c\/p\u003e","brand":"Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":52041467822374,"sku":"BTRCP-LS41251300-FT-8","price":999.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/ls41251110ft_2_1.jpg?v=1770811510"},{"product_id":"btr-cp-piston-and-ring-set-gen-iii-iv-ls-4-125-bore-4-000-stroke-6-125-rod-3cc-flat-top-btrcp-ls41251110-ft-8","title":"BTR Cp Piston \u0026 Ring Set - GEN III\/IV LS - 4.125\" Bore - 4.000\" Stroke - 6.125\" Rod - 3CC Flat Top","description":"\u003cp\u003eBTR has joined forces with CP-Carrillo and Total Seal to offer a new solution for Gen III Hemi and LS\/LT engine builders looking for a tough boost-ready piston kit featuring high-quality American made components at a price that won't break the bank! All pistons are manufactured from 2618 alloy for strength and durability. Features include--\u003cbr\u003e\n- Balanced to + or – 1 gram\u003cbr\u003e\n- Dual forced pin oilers\u003cbr\u003e\n- Accumulator Grooves\u003cbr\u003e\n- Forged side relief\u003cbr\u003e\n- Heavy Wall .230\" Chromoly wrist pins with wire locks\u003cbr\u003e\n- FEA designed forging\u003cbr\u003e\n- Tight tolerances\u003cbr\u003e\n-\u003cbr\u003e\nLateral gas ports for improved ring seal\u003cbr\u003e\n- 2000hp rated\u003cbr\u003e\n-Premium Total Seal AP ring set included (Comes standard with 1.2mm x 1.2mm x 3.0mm ring pack that consists of 440B Stainless Steel Tops with a C33 Face Coating, Taper Hook Groove Napier second rings and a 3-piece soft-nitrided rail flex vent oil rings, specially designed for severe duty applications such as nitrous blowers and turbo engines.)\u003c\/p\u003e","brand":"Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":52041467855142,"sku":"BTRCP-LS41251110-FT-8","price":999.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/ls41251110ft_2.jpg?v=1770811509"},{"product_id":"btr-cp-piston-and-ring-set-gen-v-lt-4-070-bore-3-860-stroke-6-125-rod-6cc-dish-btrcp-lt40701180-dsh-8","title":"BTR Cp Piston \u0026 Ring Set - GEN V LT - 4.070\" - Bore - 3.860\" Stroke - 6.125\" Rod - 6CC Dish","description":"\u003cp\u003eBTR has joined forces with CP-Carrillo and Total Seal to offer a new solution for Gen III Hemi and LS\/LT engine builders looking for a tough boost-ready piston kit featuring high-quality American made components at a price that won't break the bank! All pistons are made in the USA, manufactured from 2618 alloy for strength and durability. Features include--\u003cbr\u003e\n-Balanced to + or – 1 gram\u003cbr\u003e\n-Dual forced pin oilers\u003cbr\u003e\n-Accumulator Grooves\u003cbr\u003e\n-Forged side relief\u003cbr\u003e\n-Heavy Wall .200\" Chromoly wrist pins with wire locks\u003cbr\u003e\n-FEA designed forging\u003cbr\u003e\n-Tight tolerances\u003cbr\u003e\n-Premium Total Seal AP ring set included (Comes standard with 1.2mm x 1.2mm x 3.0mm ring pack that consists of 440B Stainless Steel Tops with a C33 Face Coating, Taper Hook Groove Napier second rings and a 3-piece soft-nitrided rail flex vent oils, specially designed for severe duty applications such as nitrous blowers and turbo engines.)\u003c\/p\u003e","brand":"Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":52041467887910,"sku":"BTRCP-LT40701180-DSH-8","price":999.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/lt40701180dsh1_4.jpg?v=1770811512"},{"product_id":"btr-cp-piston-and-ring-set-gen-v-lt-port-injection-4-070-bore-4-000-stroke-6-125-rod-3cc-flat-top-btrcp-ltpi40701110-ft-8","title":"BTR Cp Piston \u0026 Ring Set - GEN V LT Port Injection - 4.070\" Bore - 4.000\" Stroke - 6.125\" Rod - 3CC Flat Top","description":"\u003cp\u003eBTR has joined forces with CP-Carrillo and Total Seal to offer a new solution for Gen III Hemi and LS\/LT engine builders looking for a tough boost-ready piston kit featuring high-quality American made components at a price that won't break the bank! All pistons are manufactured from 2618 alloy for strength and durability. Features include--\u003cbr\u003e\n-Balanced to + or – 1 gram\u003cbr\u003e\n-Dual forced pin oilers\u003cbr\u003e\n-Accumulator Grooves\u003cbr\u003e\n-Forged side relief\u003cbr\u003e\n-Heavy Wall .230\" Chromoly wrist pins with wire locks\u003cbr\u003e\n-FEA designed forging\u003cbr\u003e\n-Tight tolerances\u003cbr\u003e\n-\u003cbr\u003e\nLateral gas ports for improved ring seal\u003cbr\u003e\n- 2000hp rated\u003cbr\u003e\n-Premium Total Seal AP ring set included (Comes standard with 1.2mm x 1.2mm x 3.0mm ring pack that consists of 440B Stainless Steel Tops with a C33 Face Coating, Taper Hook Groove Napier second rings and a 3-piece soft-nitrided rail flex vent oil rings, specially designed for severe duty applications such as nitrous blowers and turbo engines.)\u003c\/p\u003e","brand":"Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":52041467920678,"sku":"BTRCP-LTPI40701110-FT-8","price":999.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/lt40701110ft1_2.jpg?v=1770811513"},{"product_id":"btr-forged-crankshaft","title":"BTR Forged Crankshaft","description":"\u003cp\u003eBTR FORGED CRANKSHAFT FOR LS ENGINES\u003cbr\u003e\nBTR's Premium, 4340 Forged Crankshafts are available for serious street \u0026amp; race LS engines. Each crank is core-hardened using nitride for improved strength, bearing life, and size tolerances held to +\/-.0002\". BTR has either a 3.622\", 3.900\" or 4.000\" stroke along with three different reluctor wheel options, including standard factory 24 \u0026amp; 58 tooth wheels, or an upgraded 24 tooth BILLET wheel. A standard wet sump snout and 6-bolt rear flange will allow you to bolt on your factory balancers \u0026amp; flywheels\/flexplates or the many aftermarket pieces offered.\u003cbr\u003e\nFEATURES:\u003cbr\u003e\n- 2.100 rod journal diameter\u003cbr\u003e\n- .125\" radius on both the connecting rod journals and main journals for increased strength\u003cbr\u003e\n-\u003cbr\u003e\nChamfered oil holes for improved oiling\u003cbr\u003e\n- Leading edge chamfer and radius on counterweights\u003cbr\u003e\n- BTR balanced rotating assembles are available!\u003cbr\u003e\nNOTE: BTR crankshafts require an OEM style, one-piece crank gear.\u003c\/p\u003e","brand":"Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":52041471033638,"sku":"BTR FORGED CRANKSHAFT","price":899.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/btrcra4000f158.jpg?v=1770811022"},{"product_id":"btr-forged-gen-v-crankshaft-4-000-stroke-58x-reluctor-btrcra4000f258","title":"BTR Forged GEN V Crankshaft - 4.000\" Stroke - 58X Reluctor","description":"\u003cp\u003eBTR's GenV LT Premium, 4340 Forged  4.00\" stroke Crankshafts are available for the weekend Cars \u0026amp; Coffee crowd or to the Die-hard Grudge racers. Each crank is Core-Hardened using Nitride for improved strength, bearing life and size tolerances held to +\/-.0002\". BTR  4.000\" stroke crankshafts include a 58 tooth Reluctor wheel. A standard wet sump snout and 8-bolt rear flange will allow you to bolt on your factory balancers \u0026amp; flywheels\/flexplates or the many aftermarket pieces offered.\u003cbr\u003e\nFEATURES:\u003cbr\u003e\n- 2.100 rod journal diameter\u003cbr\u003e\n- .125\" radius on both the connecting rod journals and main journals for increased strength\u003cbr\u003e\n- Chamfered oil holes for improved oiling\u003cbr\u003e\n- Leading edge chamfer and radius on counterweights\u003cbr\u003e\n- BTR balanced rotating assembles are available!\u003cbr\u003e\nNOTE: BTR Gen V LT crankshafts require a modified, chamfered end lower timing chain sprocket designed for use with aftermarket Gen V crankshafts - PART #\u003cbr\u003e\nBTR31216\u003c\/p\u003e","brand":"Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":52041471099174,"sku":"BTRCRA4000F258","price":939.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/m2_4lt540065_8_1.jpg?v=1770811514"},{"product_id":"btr-l83-5-3-drop-in-single-piston-3-780-bore-3-622-stroke-6-098-rod-btrp325098di-1","title":"BTR L83 5.3 Drop in Single Piston - 3.780\" Bore - 3.622\" Stroke - 6.098\" Rod","description":"\u003ctable class=\"features-table\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEngine Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGen V LT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePistons\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBore Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.780\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePin Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e.943\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStroke\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.622\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePiston Style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRod Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6.098\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":52041478111526,"sku":"BTRP325098DI-1","price":79.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/btr-placeholder_a3eb59c4-03d1-4701-832c-f2aaf2ec4e9c.png?v=1770811545"},{"product_id":"btr-piston-set-gen-iii-iv-ls-3-780-bore-3-622-stroke-6-098-rod-2cc-dome-btrp325098dm2-8","title":"BTR Piston Set - GEN III\/IV LS - 3.780\" Bore - 3.622\" Stroke - 6.098\" Rod - 2CC Dome","description":"\u003cp\u003eBTR PISTON SET - GEN III\/IV LS -  3.780\" BORE - 3.622\" STROKE - 6.098\" ROD - 2CC DOME - BTRP325098DM2-8\u003cbr\u003e\nRINGS NOT INCLUDED\u003cbr\u003e\nBTR and Wiseco have formed a partnership to bring an affordable piston to market for LS engines. Constructed out of 2618 forged material, BTR pistons give the consumer options for stock floating pin or aftermarket connecting rods, and stock 3.622\", 3.625\", or 4.000\" crankshaft strokes for a wide variety of applications. Included in the set are .927 piston pins and spiro locks for all 6.125\" rod applications, while .943 piston pins and OEM style wire clips are included for all 6.098\" (stock) rod applications. These pistons use an OEM style, high quality Mahle piston ring (\u003cbr\u003e\n41859CP\u003cbr\u003e\n) to keep costs at an affordable level, while still maintaining an OEM quality ring seal.\u003cbr\u003e\nPistons are available in 3.780\", 3.800\", 3.898\", 4.000\", 4.030\", and 4.065\" bore sizes.\u003c\/p\u003e","brand":"Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":52041485484326,"sku":"BTRP325098DM2-8","price":649.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/btrp325125dm2-3_2.jpg?v=1770811546"},{"product_id":"btr-piston-set-gen-iii-iv-ls-3-780-bore-3-622-stroke-6-098-rod-2cc-flat-top-btrp325098ft2-8","title":"BTR Piston Set - GEN III\/IV LS - 3.780\" Bore - 3.622\" Stroke - 6.098\" Rod - 2CC Flat Top","description":"\u003cp\u003eBTR PISTON SET - GEN III\/IV LS -  3.780\" BORE - 3.622\" STROKE - 6.098\" ROD - 2CC FLAT TOP - BTRP325098FT2-8\u003cbr\u003e\nRINGS NOT INCLUDED\u003cbr\u003e\nBTR and Wiseco have formed a partnership to bring an affordable piston to market for LS engines. Constructed out of 2618 forged material, BTR pistons give the consumer options for stock floating pin or aftermarket connecting rods, and stock 3.622\", 3.625\", or 4.000\" crankshaft strokes for a wide variety of applications. Included in the set are .943 piston pins and OEM style wire clips are included for all 6.098\" (stock) rod applications. These pistons use an OEM style, high quality Mahle piston ring (\u003cbr\u003e\n41859CP\u003cbr\u003e\n) to keep costs at an affordable level, while still maintaining an OEM quality ring seal.\u003cbr\u003e\nPistons are available in 3.780\", 3.800\", 3.898\", 4.000\", 4.030\", and 4.065\" bore sizes.\u003c\/p\u003e","brand":"Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":52041485549862,"sku":"BTRP325098FT2-8","price":649.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/btrp325125ft2_6__3.jpg?v=1770811547"},{"product_id":"btr-piston-set-gen-iii-iv-ls-3-780-bore-3-622-stroke-6-125-rod-2cc-dome-btrp325125dm2-8","title":"BTR Piston Set - GEN III\/IV LS - 3.780\" Bore - 3.622\" Stroke - 6.125\" Rod - 2CC Dome","description":"\u003cp\u003eBTR PISTON SET - GEN III\/IV LS - 3.780\" BORE - 3.622\" STROKE - 6.125\" ROD - 2CC DOME - BTRP325125DM2-8\u003cbr\u003e\nRINGS NOT INCLUDED\u003cbr\u003e\nBTR and Wiseco have formed a partnership to bring an affordable piston to market for LS engines. Constructed out of 2618 forged material, BTR pistons give the consumer options for stock floating pin or aftermarket connecting rods, and stock 3.622\", 3.625\", or 4.000\" crankshaft strokes for a wide variety of applications. Included in the set are .927 piston pins and spiro locks for all 6.125\" rod applications, while .943 piston pins and OEM style wire clips are included for all 6.098\" (stock) rod applications. These pistons use an OEM style, high quality Mahle piston ring (\u003cbr\u003e\n41859CP\u003cbr\u003e\n) to keep costs at an affordable level, while still maintaining an OEM quality ring seal.\u003cbr\u003e\nPistons are available in 3.780\", 3.800\", 3.898\", 4.000\", 4.030\", and 4.065\" bore sizes.\u003c\/p\u003e","brand":"Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":52041485582630,"sku":"BTRP325125DM2-8","price":649.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/btrp325125dm2-3_eee8349b-563f-4e2a-bb13-a8edb41c5b96.jpg?v=1770811548"},{"product_id":"btr-piston-set-gen-iii-iv-ls-3-780-bore-3-622-stroke-6-125-rod-2cc-flat-top-btrp325125ft2-8","title":"BTR Piston Set - GEN III\/IV LS - 3.780\" Bore - 3.622\" Stroke - 6.125\" Rod - 2CC Flat Top","description":"\u003cp\u003eBTR PISTON SET - GEN III\/IV LS -  3.780\" BORE - 3.622\" STROKE - 6.125\" ROD - 2CC FLAT TOP - BTRP325125FT2-8\u003cbr\u003e\nRINGS NOT INCLUDED\u003cbr\u003e\nBTR and Wiseco have formed a partnership to bring an affordable piston to market for LS engines. Constructed out of 2618 forged material, BTR pistons give the consumer options for stock floating pin or aftermarket connecting rods, and stock 3.622\" or 4.000\" crankshaft strokes for a wide variety of applications.\u003cbr\u003e\nIncluded in the set are .927 piston pins and spiro locks for all 6.125\" rod applications.\u003cbr\u003e\nThese pistons use a stock style piston ring (\u003cbr\u003e\n41859CP\u003cbr\u003e\n) to keep costs at an affordable level, while still maintaining an OEM quality ring seal.\u003cbr\u003e\nPistons are available in 3.780\", 3.800\", 3.898\", 4.000\", 4.030\", and 4.065\" bore sizes.\u003c\/p\u003e","brand":"Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":52041485615398,"sku":"BTRP325125FT2-8","price":649.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/btrp325125ft2_6__4.jpg?v=1770811548"},{"product_id":"btr-piston-set-gen-iii-iv-ls-3-780-bore-4-000-stroke-6-098-rod-8cc-dish-btrp359098ds8-8","title":"BTR Piston Set - GEN III\/IV LS - 3.780\" Bore - 4.000\" Stroke - 6.098\" Rod - 8CC Dish","description":"\u003cp\u003eBTR PISTON SET - GEN III\/IV LS - 3.780\" BORE - 4.000\" STROKE - 6.098\" ROD - 8CC DISH - BTRP359098DS8-8\u003cbr\u003e\nRINGS NOT INCLUDED\u003cbr\u003e\nBTR and Wiseco have formed a partnership to bring an affordable piston to market for LS engines. Constructed out of 2618 forged material, BTR pistons give the consumer options for stock floating pin or aftermarket connecting rods, and stock 3.622\", 3.625\", or 4.000\" crankshaft strokes for a wide variety of applications. Included in the set are .927 piston pins and spiro locks for all 6.125\" rod applications, while .943 piston pins and OEM style wire clips are included for all 6.098\" (stock) rod applications. These pistons use an OEM style, high quality Mahle piston ring (\u003cbr\u003e\n41859CP\u003cbr\u003e\n) to keep costs at an affordable level, while still maintaining an OEM quality ring seal.\u003cbr\u003e\nPistons are available in 3.780\", 3.800\", 3.898\", 4.000\", 4.030\", and 4.065\" bore sizes.\u003c\/p\u003e","brand":"Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":52041485648166,"sku":"BTRP359098DS8-8","price":649.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/btrp408098ds8_6__2_8938a809-28ad-41eb-9512-290fd69a7718.jpg?v=1770811556"},{"product_id":"btr-piston-set-gen-iii-iv-ls-3-800-bore-3-622-stroke-6-098-rod-2cc-flat-top-btrp329098ft2-8","title":"BTR Piston Set - GEN III\/IV LS - 3.800\" Bore - 3.622\" Stroke - 6.098\" Rod - 2CC Flat Top","description":"\u003cp\u003eBTR PISTON SET - GEN III\/IV LS -  3.800\" BORE - 3.622\" STROKE - 6.098\" ROD - 2CC FLAT TOP - BTRP329098FT2-8\u003cbr\u003e\nRINGS NOT INCLUDED\u003cbr\u003e\nBTR and Wiseco have formed a partnership to bring an affordable piston to market for LS engines. Constructed out of 2618 forged material, BTR pistons give the consumer options for stock floating pin or aftermarket connecting rods, and stock 3.622\", 3.625\", or 4.000\" crankshaft strokes for a wide variety of applications. Included in the set are .927 piston pins and spiro locks for all 6.125\" rod applications, while .943 piston pins and OEM style wire clips are included for all 6.098\" (stock) rod applications. These pistons use an OEM style, high quality Mahle piston ring (\u003cbr\u003e\n41859CP.020\u003cbr\u003e\n) to keep costs at an affordable level, while still maintaining an OEM quality ring seal.\u003cbr\u003e\nPistons are available in 3.780\", 3.800\", 3.898\", 4.000\", 4.030\", and 4.065\" bore sizes.\u003c\/p\u003e","brand":"Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":52041485680934,"sku":"BTRP329098FT2-8","price":649.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/btrp325125ft2_6__1_dd91af38-b55f-4f52-8a79-a842f6f1f34e.jpg?v=1770811550"},{"product_id":"btr-piston-set-gen-iii-iv-ls-3-800-bore-3-622-stroke-6-125-rod-2cc-dome-btrp329125dm2-8","title":"BTR Piston Set - GEN III\/IV LS - 3.800\" Bore - 3.622\" Stroke - 6.125\" Rod - 2CC Dome","description":"\u003cp\u003eBTR PISTON SET -  GEN III\/IV LS - 3.800\" BORE - 3.622\" STROKE - 6.125\" ROD - 2CC DOME - BTRP329125DM2-8\u003cbr\u003e\nRINGS NOT INCLUDED\u003cbr\u003e\nBTR and Wiseco have formed a partnership to bring an affordable piston to market for LS engines. Constructed out of 2618 forged material, BTR pistons give the consumer options for stock floating pin or aftermarket connecting rods, and stock 3.622\", 3.625\", or 4.000\" crankshaft strokes for a wide variety of applications. Included in the set are .927 piston pins and spiro locks for all 6.125\" rod applications, while .943 piston pins and OEM style wire clips are included for all 6.098\" (stock) rod applications. These pistons use an OEM style, high quality Mahle piston ring (\u003cbr\u003e\n41859CP.020\u003cbr\u003e\n) to keep costs at an affordable level, while still maintaining an OEM quality ring seal.\u003cbr\u003e\nPistons are available in 3.780\", 3.800\", 3.898\", 4.000\", 4.030\", and 4.065\" bore sizes.\u003c\/p\u003e","brand":"Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":52041485713702,"sku":"BTRP329125DM2-8","price":649.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/btrp325125dm2-3_3.jpg?v=1770811551"},{"product_id":"btr-piston-set-gen-iii-iv-ls-3-800-bore-3-622-stroke-6-125-rod-2cc-flat-top-btrp329125ft2-8","title":"BTR Piston Set - GEN III\/IV LS - 3.800\" Bore - 3.622\" Stroke - 6.125\" Rod - 2CC Flat Top","description":"\u003cp\u003eBTR PISTON SET - GEN III\/IV LS -  3.800\" BORE - 3.622\" STROKE - 6.125\" ROD - 2CC FLAT TOP - BTRP329125FT2-8\u003cbr\u003e\nRINGS NOT INCLUDED\u003cbr\u003e\nBTR and Wiseco have formed a partnership to bring an affordable piston to market for LS engines. Constructed out of 2618 forged material, BTR pistons give the consumer options for stock floating pin or aftermarket connecting rods, and stock 3.622\", 3.625\", or 4.000\" crankshaft strokes for a wide variety of applications. Included in the set are .927 piston pins and spiro locks for all 6.125\" rod applications, while .943 piston pins and OEM style wire clips are included for all 6.098\" (stock) rod applications. These pistons use an OEM style, high quality Mahle piston ring (\u003cbr\u003e\n41859CP.020\u003cbr\u003e\n) to keep costs at an affordable level, while still maintaining an OEM quality ring seal.\u003cbr\u003e\nPistons are available in 3.780\", 3.800\", 3.898\", 4.000\", 4.030\", and 4.065\" bore sizes.\u003c\/p\u003e","brand":"Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":52041485746470,"sku":"BTRP329125FT2-8","price":649.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/btrp325125ft2_6__2.jpg?v=1770811552"},{"product_id":"btr-piston-set-gen-iii-iv-ls-3-800-bore-4-000-stroke-6-098-rod-8cc-dish-btrp363098ds8-8","title":"BTR Piston Set - GEN III\/IV LS - 3.800\" Bore - 4.000\" Stroke - 6.098\" Rod - 8CC Dish","description":"\u003cp\u003eBTR PISTON SET - GEN III\/IV LS -  3.800\" BORE - 4.000\" STROKE - 6.098\" ROD - 8CC DISH - BTRP363098DS8-8\u003cbr\u003e\nRINGS NOT INCLUDED\u003cbr\u003e\nBTR and Wiseco have formed a partnership to bring an affordable piston to market for LS engines. Constructed out of 2618 forged material, BTR pistons give the consumer options for stock floating pin or aftermarket connecting rods, and stock 3.622\", 3.625\", or 4.000\" crankshaft strokes for a wide variety of applications. Included in the set are .927 piston pins and spiro locks for all 6.125\" rod applications, while .943 piston pins and OEM style wire clips are included for all 6.098\" (stock) rod applications. These pistons use an OEM style, high quality Mahle piston ring (\u003cbr\u003e\n41859CP.020\u003cbr\u003e\n) to keep costs at an affordable level, while still maintaining an OEM quality ring seal.\u003cbr\u003e\nPistons are available in 3.780\", 3.800\", 3.898\", 4.000\", 4.030\", and 4.065\" bore sizes.\u003c\/p\u003e","brand":"Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":52041486106918,"sku":"BTRP363098DS8-8","price":649.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/btrp363098ds8-8a.jpg?v=1770811558"},{"product_id":"btr-piston-set-gen-iii-iv-ls-3-898-bore-3-622-stroke-6-125-rod-2cc-dome-btrp346125dm2-8","title":"BTR Piston Set - GEN III\/IV LS - 3.898\" Bore - 3.622\" Stroke - 6.125\" Rod - 2CC Dome","description":"\u003cp\u003eBTR PISTON SET - GEN III\/IV LS - 3.898\" BORE - 3.622\" STROKE - 6.125\" ROD - 2CC DOME - BTRP346125DM2-8\u003cbr\u003e\nRINGS NOT INCLUDED\u003cbr\u003e\nBTR and Wiseco have formed a partnership to bring an affordable piston to market for LS engines. Constructed out of 2618 forged material, BTR pistons give the consumer options for stock floating pin or aftermarket connecting rods, and stock 3.622\", 3.625\", or 4.000\" crankshaft strokes for a wide variety of applications. Included in the set are .927 piston pins and spiro locks for all 6.125\" rod applications, while .943 piston pins and OEM style wire clips are included for all 6.098\" (stock) rod applications. These pistons use an OEM style, high quality Mahle piston ring (\u003cbr\u003e\n41850CP\u003cbr\u003e\n) to keep costs at an affordable level, while still maintaining an OEM quality ring seal.\u003cbr\u003e\nPistons are available in 3.780\", 3.800\", 3.898\", 4.000\", 4.030\", and 4.065\" bore sizes.\u003c\/p\u003e","brand":"Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":52041486172454,"sku":"BTRP346125DM2-8","price":649.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/btrp325125dm2-3_1.jpg?v=1770811555"},{"product_id":"btr-piston-set-gen-iii-iv-ls-4-000-bore-3-622-stroke-6-098-rod-3cc-flat-top-btrp364098ft3-8","title":"BTR Piston Set - GEN III\/IV LS - 4.000\" Bore - 3.622\" Stroke - 6.098\" Rod - 3CC Flat Top","description":"\u003cp\u003eBTR PISTON SET - GEN III\/IV LS -  4.000\" BORE - 3.622\" STROKE - 6.098\" ROD - 3CC FLAT TOP - BTRP364098FT3-8\u003cbr\u003e\nRINGS NOT INCLUDED\u003cbr\u003e\nBTR and Wiseco have formed a partnership to bring an affordable piston to market for LS engines. Constructed out of 2618 forged material, BTR pistons give the consumer options for stock floating pin or aftermarket connecting rods, and stock 3.622\", 3.625\", or 4.000\" crankshaft strokes for a wide variety of applications. Included in the set are .927 piston pins and spiro locks for all 6.125\" rod applications, while .943 piston pins and OEM style wire clips are included for all 6.098\" (stock) rod applications. These pistons use an OEM style, high quality Mahle piston ring (\u003cbr\u003e\n41858CP\u003cbr\u003e\n) to keep costs at an affordable level, while still maintaining an OEM quality ring seal.\u003cbr\u003e\nPistons are available in 3.780\", 3.800\", 3.898\", 4.000\", 4.030\", and 4.065\" bore sizes.\u003c\/p\u003e","brand":"Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":52041486237990,"sku":"BTRP364098FT3-8","price":649.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/btrp325125ft2_6__8.jpg?v=1770811557"},{"product_id":"btr-piston-set-gen-iii-iv-ls-4-000-bore-3-622-stroke-6-125-rod-12cc-dome-btrp364125dm12-8","title":"BTR Piston Set - GEN III\/IV LS - 4.000\" Bore - 3.622\" Stroke - 6.125\" Rod - 12CC Dome","description":"\u003cp\u003eBTR PISTON SET - GEN III\/IV LS -  4.000\" BORE - 3.622\" STROKE - 6.125\" ROD - 12CC DOME - BTRP364125DM12-8\u003cbr\u003e\nRINGS NOT INCLUDED\u003cbr\u003e\nBTR and Wiseco have formed a partnership to bring an affordable piston to market for LS engines. Constructed out of 2618 forged material, BTR pistons give the consumer options for stock floating pin or aftermarket connecting rods, and stock 3.622\", 3.625\", or 4.000\" crankshaft strokes for a wide variety of applications. Included in the set are .927 piston pins and spiro locks for all 6.125\" rod applications, while .943 piston pins and OEM style wire clips are included for all 6.098\" (stock) rod applications. These pistons use an OEM style, high quality Mahle piston ring (\u003cbr\u003e\n41858CP\u003cbr\u003e\n) to keep costs at an affordable level, while still maintaining an OEM quality ring seal.\u003cbr\u003e\nPistons are available in 3.780\", 3.800\", 3.898\", 4.000\", 4.030\", and 4.065\" bore sizes.\u003cbr\u003e\nNOTE: This piston will\u003cbr\u003e\nNOT\u003cbr\u003e\nwork with a LS3 cylinder head.\u003c\/p\u003e","brand":"Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":52041486270758,"sku":"BTRP364125DM12-8","price":649.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/dsc_8775.jpg?v=1770811558"},{"product_id":"btr-piston-set-gen-iii-iv-ls-4-000-bore-3-622-stroke-6-125-rod-3cc-flat-top-btrp364125ft3-8","title":"BTR Piston Set - GEN III\/IV LS - 4.000\" Bore - 3.622\" Stroke - 6.125\" Rod - 3CC Flat Top","description":"\u003cp\u003eBTR PISTON SET - GEN III\/IV LS -  4.000\" BORE - 3.622\" STROKE - 6.125\" ROD - 3CC FLAT TOP - BTRP364125FT3-8\u003cbr\u003e\nRINGS NOT INCLUDED\u003cbr\u003e\nBTR and Wiseco have formed a partnership to bring an affordable piston to market for LS engines. Constructed out of 2618 forged material, BTR pistons give the consumer options for stock floating pin or aftermarket connecting rods, and stock 3.622\", 3.625\", or 4.000\" crankshaft strokes for a wide variety of applications. Included in the set are .927 piston pins and spiro locks for all 6.125\" rod applications, while .943 piston pins and OEM style wire clips are included for all 6.098\" (stock) rod applications. These pistons use an OEM style, high quality Mahle piston ring (\u003cbr\u003e\n41858CP\u003cbr\u003e\n) to keep costs at an affordable level, while still maintaining an OEM quality ring seal.\u003cbr\u003e\nPistons are available in 3.780\", 3.800\", 3.898\", 4.000\", 4.030\", and 4.065\" bore sizes.\u003c\/p\u003e","brand":"Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":52041486303526,"sku":"BTRP364125FT3-8","price":649.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/btrp325125ft2_6__5_12e323cd-e454-449a-99c7-02b9a33c3686.jpg?v=1770811559"},{"product_id":"btr-piston-set-gen-iii-iv-ls-4-000-bore-4-000-stroke-6-098-rod-8cc-dish-btrp402098ds8-8","title":"BTR Piston Set - GEN III\/IV LS - 4.000\" Bore - 4.000\" Stroke - 6.098\" Rod - 8CC Dish","description":"\u003cp\u003eBTR PISTON SET - GEN III\/IV LS -  4.000\" BORE - 4.000\" STROKE - 6.098\" ROD - 8CC DISH - BTRP402098DS8-8\u003cbr\u003e\nRINGS NOT INCLUDED\u003cbr\u003e\nBTR and Wiseco have formed a partnership to bring an affordable piston to market for LS engines. Constructed out of 2618 forged material, BTR pistons give the consumer options for stock floating pin or aftermarket connecting rods, and stock 3.622\", 3.625\", or 4.000\" crankshaft strokes for a wide variety of applications. Included in the set are .927 piston pins and spiro locks for all 6.125\" rod applications, while .943 piston pins and OEM style wire clips are included for all 6.098\" (stock) rod applications. These pistons use an OEM style, high quality Mahle piston ring (\u003cbr\u003e\n41858CP\u003cbr\u003e\n) to keep costs at an affordable level, while still maintaining an OEM quality ring seal.\u003cbr\u003e\nPistons are available in 3.780\", 3.800\", 3.898\", 4.000\", 4.030\", and 4.065\" bore sizes.\u003c\/p\u003e","brand":"Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":52041486336294,"sku":"BTRP402098DS8-8","price":649.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/btrp408098ds8_6__1.jpg?v=1770811566"},{"product_id":"btr-piston-set-gen-iii-iv-ls-4-030-bore-3-622-stroke-6-098-rod-3cc-flat-top-btrp370098ft3-8","title":"BTR Piston Set - GEN III\/IV LS - 4.030\" Bore - 3.622\" Stroke - 6.098\" Rod - 3CC Flat Top","description":"\u003cp\u003eBTR PISTON SET - GEN III\/IV LS -  4.030\" BORE - 3.622\" STROKE - 6.098\" ROD - 3CC FLAT TOP - BTRP370098FT3-8\u003cbr\u003e\nRINGS NOT INCLUDED\u003cbr\u003e\nBTR and Wiseco have formed a partnership to bring an affordable piston to market for LS engines. Constructed out of 2618 forged material, BTR pistons give the consumer options for stock floating pin or aftermarket connecting rods, and stock 3.622\", 3.625\", or 4.000\" crankshaft strokes for a wide variety of applications. Included in the set are .927 piston pins and spiro locks for all 6.125\" rod applications, while .943 piston pins and OEM style wire clips are included for all 6.098\" (stock) rod applications. These pistons use an OEM style, high quality Mahle piston ring (\u003cbr\u003e\n41858CP.030\u003cbr\u003e\n) to keep costs at an affordable level, while still maintaining an OEM quality ring seal.\u003cbr\u003e\nPistons are available in 3.780\", 3.800\", 3.898\", 4.000\", 4.030\", and 4.065\" bore sizes.\u003c\/p\u003e","brand":"Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":52041486369062,"sku":"BTRP370098FT3-8","price":649.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/btrp325125ft2_6__6_c9b7b108-876a-4d31-9d9f-f5a0f25133bd.jpg?v=1770811561"},{"product_id":"btr-piston-set-gen-iii-iv-ls-4-030-bore-3-622-stroke-6-125-rod-3cc-flat-top-btrp370125ft3-8","title":"BTR Piston Set - GEN III\/IV LS - 4.030\" Bore - 3.622\" Stroke - 6.125\" Rod - 3CC Flat Top","description":"\u003cp\u003eBTR PISTON SET - GEN III\/IV LS -  4.030\" BORE - 3.622\" STROKE - 6.125\" ROD - 3CC FLAT TOP - BTRP370125FT3-8\u003cbr\u003e\nRINGS NOT INCLUDED\u003cbr\u003e\nBTR and Wiseco have formed a partnership to bring an affordable piston to market for LS engines. Constructed out of 2618 forged material, BTR pistons give the consumer options for stock floating pin or aftermarket connecting rods, and stock 3.622\", 3.625\", or 4.000\" crankshaft strokes for a wide variety of applications. Included in the set are .927 piston pins and spiro locks for all 6.125\" rod applications, while .943 piston pins and OEM style wire clips are included for all 6.098\" (stock) rod applications. These pistons use an OEM style, high quality Mahle piston ring (\u003cbr\u003e\n41858CP.030\u003cbr\u003e\n) to keep costs at an affordable level, while still maintaining an OEM quality ring seal.\u003cbr\u003e\nPistons are available in 3.780\", 3.800\", 3.898\", 4.000\", 4.030\", and 4.065\" bore sizes.\u003c\/p\u003e","brand":"Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":52041486401830,"sku":"BTRP370125FT3-8","price":649.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/btrp325125ft2_6__7.jpg?v=1770811562"}],"url":"https:\/\/billysspeedshop.com\/fr\/collections\/engine-rotating-assembly.oembed?page=9","provider":"Billys Speed Shop","version":"1.0","type":"link"}