Cylinders & Pistons - Evo

31 products

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

$477.99

Features & Benefits:- * Bore = 3.518″ * Stroke = 4.250″ * Hypereutectic Alloy is a cast 16% silicon content material. * Perfect for air cooled engines. * Low thermal expansion rate = tighter ...

KB PISTONS

$477.99

Features & Benefits:- * Bore = 3.498″ * Stroke = 4.250″ * Hypereutectic Alloy is a cast 16% silicon content material. * Perfect for air cooled engines. * Low thermal expansion rate = tighter p...

KB PISTONS

$477.99

Features & Benefits:- * Bore = 3.508″ * Stroke = 4.250″ * Hypereutectic Alloy is a cast 16% silicon content material. * Perfect for air cooled engines. * Low thermal expansion rate = tighter p...

FEULING

$277.99

* 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...

COLONY MACHINE

$259.99

Features & Benefits:- * Custom Look. * Polished & Chrome Plated, 12 Point Dome Top Headbolts. * Replaces OEM 16480-92 and OEM 16478-85A Tech Tips:- * Will Not Fit M8 Engine’s. Proudly Mad...

COLONY MACHINE

$256.99

Features & Benefits:- * High Tensile Aircraft Quality Studs. Proudly Made in the USA by Colony Machine ! MFR PART No: 2442-8 ROLLIES PART No: CM-2442-8

COLONY MACHINE

$200.99

* Set of 8 * Replaces OEM # 16837-85 MFR PART No: 9424-8 ROLLIES PART No: CM-9424-8

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$217.99

Features & Benefits:- * Sold as a Pair. Tech Tips:- * The SS940-0014 are the thin rings that S&S are using now. Proudly Made in the USA by S&S Cycle ! MFR PART No: 940-0014 ROLLIES P...

$2,900.99

Features & Benefits:- * Includes Cast Flat Top Pistons. * Includes Gaskets. * 8.5:1 Compression Ratio with Stock HD Heads. * 8.8:1 Compression Ratio with S&S 76cc Performance Heads # SS106...

$2,731.99

Features & Benefits:- * Includes Cast Flat Top Pistons. * Includes Gaskets. * 8.5:1 Compression Ratio with Stock HD Heads * 8.8:1 Compression Ratio with S&S 76cc Performance Heads # SS106-...

CP CARRILLO PISTONS

$653.99

Features & Benefits:- * ID # 2618 * Bore = 3.498″ * Stroke = 4.250″ * Fully CNC machined * Balanced to +/- 1 gram * Double forced pin oilers * Forged from high strength 2618 alloy * Designed ...

CP CARRILLO PISTONS

$653.99

Features & Benefits:- * ID # 2788 * Bore = 3.498″ * Stroke = 4.250″ * Fully CNC machined * Balanced to +/- 1 gram * Double forced pin oilers * Forged from high strength 2618 alloy * Designed ...

CP CARRILLO PISTONS

$635.99

Features & Benefits:- * ID # 2615 * Bore = 3.508″ * Stroke = 4.250″ * Fully CNC machined * Balanced to +/- 1 gram * Double forced pin oilers * Forged from high strength 2618 alloy * Designed ...

CP CARRILLO PISTONS

$635.99

Features & Benefits:- * ID # 2790 * Bore = 3.518″ * Stroke = 4.250″ * Fully CNC machined * Balanced to +/- 1 gram * Double forced pin oilers * Forged from high strength 2618 alloy * Designed ...

$969.99

These forged 3-1/2″ bore stroker pistons for 1984-’99 HD® Evolution® big twin engines are required for the S&S 89″ 4-5/8″ stroker flywheels. Pistons are designed to be used with stock cylinder...