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Cylinders & Pistons

163 products

Shop the range of aftermarket motorcycle engine products at Pro Class Custom Parts.

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Regular price $200.99
Sale price $200.99
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* High quality, direct replacement piston ring kit * One Set Required Per Bike * Made in the USA * Cyl Dia = 3.750 +.005″ * Replaces OEM # 21950-07
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Regular price $4,081.99
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Take your 121″ CVO to 136″ The S&S Cycle 136″ Big Bore Kit delivers serious performance while keeping the factory look intact. Our 4.320″ bore forged pistons and color matched cylinders are de...
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Regular price $4,081.99
Sale price $4,081.99
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Take your 121″ CVO to 136″ The S&S Cycle 136″ Big Bore Kit delivers serious performance while keeping the factory look intact. Our 4.320″ bore forged pistons and color matched cylinders are de...
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Regular price $4,081.99
Sale price $4,081.99
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Take your 121″ CVO to 136″ The S&S Cycle 136″ Big Bore Kit delivers serious performance while keeping the factory look intact. Our 4.320″ bore forged pistons and color matched cylinders are de...
Regular price $2,383.99
Sale price $2,383.99
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Features & Benefits:- * 4.250″ Bore Cylinder & CP Carrillo # CAR-M5110 = 11.0:1 Pistons * Black with CNC Machined Fins * Includes Dowel Pins * Replaces OEM # 16800075 or 16800095 Suggested...
Regular price $2,383.99
Sale price $2,383.99
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Features & Benefits:- * 4.250″ Bore Cylinder & CP Carrillo # CAR-M5111 = 11.5:1 Pistons * Black with CNC Machined Fins * Includes Dowel Pins * Replaces OEM # 16800075 or 16800095 Suggested...
Regular price $2,383.99
Sale price $2,383.99
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Features & Benefits:- * 4.250″ Bore Cylinder & CP Carrillo # CAR-M5112 = 12.0:1 Pistons * Black with CNC Machined Fins * Includes Dowel Pins * Replaces OEM # 16800075 or 16800095 Suggeste...
Regular price $2,371.99
Sale price $2,371.99
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Features & Benefits:- * 4.250″ Bore Cylinder & Keith Black # KB596LCA.STD = 11.7:1 Pistons * Black with CNC Machined Fins * Includes Dowel Pins * Replaces OEM # 16800075 or 16800095 Sugge...
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Regular price $440.99
Sale price $440.99
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KPMI Cylinder Studs are made from 180,000 psi yield strength, fine grain, heat treated, aircraft grade alloy steel. When you want a stud that meets proof-stress and maximizes clamping force, look ...
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Regular price $439.99
Sale price $439.99
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KPMI Cylinder Studs are made from 180,000 psi yield strength, fine grain, heat treated, aircraft grade alloy steel. When you want a stud that meets proof-stress and maximizes clamping force, look ...
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Regular price $439.99
Sale price $439.99
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KPMI Cylinder Studs are made from 180,000 psi yield strength, fine grain, heat treated, aircraft grade alloy steel. When you want a stud that meets proof-stress and maximizes clamping force, look ...
Regular price $407.99
Sale price $407.99
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KPMI Cylinder Studs are made from 180,000 psi yield strength, fine grain, heat treated, aircraft grade alloy steel. When you want a stud that meets proof-stress and maximizes clamping force, look ...
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Regular price $1,084.99
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Features & Benefits:- * ID # 6918 * Bore = 4.070″ * Stroke = 4.625″ * Fully CNC machined * Balanced to +/- 1 gram * Double forced pin oilers * Forged from high strength 2618 alloy * Designed ...
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Regular price $1,084.99
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Features & Benefits:- * ID # 6918 * Bore = 4.060″ * Stroke = 4.625″ * Fully CNC machined * Balanced to +/- 1 gram * Double forced pin oilers * Forged from high strength 2618 alloy * Designed ...
Regular price $599.99
Sale price $599.99
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* The strongest studs available! * Top engine builders demand quality fasteners! Secure your engine with complete confidence * Superior in strength and performance to any other cylinder stud kit o...