Cylinders & Pistons - M8

40 products

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

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$1,338.99

* The strongest studs & bolts available! * Top engine builders demand quality fasteners! Secure your engine with complete confidence * Superior in strength and performance to any other cylinde...

CP CARRILLO PISTONS

$1,271.99

Features & Benefits:- * ID # 14207 * Bore = 4.250″ * Stroke = 4.375″ * Steel gas nitride coated top ring * Ductile iron Napier 2nd ring * Three piece flex vent oil ring * X-forging for lighte...

CP CARRILLO PISTONS

$1,271.99

Features & Benefits:- * ID # 14234 * Bore = 4.250″ * Stroke = 4.375″ * Steel gas nitride coated top ring * Ductile iron Napier 2nd ring * Three piece flex vent oil ring * X-forging for lighte...

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CP CARRILLO PISTONS

$1,271.99

Features & Benefits:- * ID # 12873 * Bore = 4.310″ * Stroke = 4.500″ * Fully CNC machined * Balanced to +/- 1 gram * Double forced pin oilers * Forged from high strength 2618 alloy * Designed...

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CP CARRILLO PISTONS

$1,270.99

Features & Benefits:- * ID # 12873 * Bore = 4.250″ * Stroke = 4.500″ * Fully CNC machined * Balanced to +/- 1 gram * Double forced pin oilers * Forged from high strength 2618 alloy * Designed...

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CP CARRILLO PISTONS

$1,271.99

Features & Benefits:- * ID # 12875 * Bore = 4.250″ * Stroke = 4.375″ * Fully CNC machined * Balanced to +/- 1 gram * Double forced pin oilers * Forged from high strength 2618 alloy * Designed...

KB PISTONS

$707.99

Features & Benefits:- * Super Duty KB Forged Coated Anodized Piston Kit. * 107ci to Big bore 124″ piston kit for Milwaukee 8 when using 4.250″ Bore Cylinders * No head modification required ...

KB PISTONS

$1,185.99

Features & Benefits:- * Super Duty KB Forged Coated Anodized Piston Kit. * 114 or 117ci to Big bore 128″ piston kit for Milwaukee 8 when using 4.250″ Bore Cylinders * No head modification req...

CP CARRILLO PISTONS

$1,066.99

Features & Benefits:- * ID # 12776 * Bore = 4.180″ * Stroke = 4.375″ * Fully CNC machined * Balanced to +/- 1 gram * Double forced pin oilers * Forged from high strength 2618 alloy * Designed...

$301.99

Features & Benefits:- * Crafted from strong, billet 6061 T6 aluminum * Patent Pending Dual Spray Technology for uniform piston cooling * Revised spray locations for more effective cooling * An...