Cylinders & Pistons - M8

40 products

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

$3,951.99

Features & Benefits:- * Upgrades Milwaukee-Eight 117ci CVO models to 132ci or all the way to 136ci with S&S stroker flywheel # SS320-0605 * 4.320″ Bore & 4.500″ Stroke * Forged Piston...

$3,951.99

Features & Benefits:- * Upgrades Milwaukee-Eight 114ci or non-CVO 117ci to 132ci or all the way to 136ci with S&S stroker flywheel # SS320-0605 * 4.320″ Bore & 4.500″ Stroke * Forged ...

$3,951.99

Features & Benefits:- * Upgrades Milwaukee-Eight 114ci or non-CVO 117ci to 132ci or all the way to 136ci with S&S stroker flywheel # SS320-0605 * 4.320″ Bore & 4.500″ Stroke * Forged ...

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$3,951.99

Features & Benefits:- * Upgrades Milwaukee-Eight 114ci or non-CVO 117ci to 132ci or all the way to 136ci with S&S stroker flywheel # SS320-0605 * 4.320″ Bore & 4.500″ Stroke * Forged ...

$4,057.99

Features & Benefits:- * Upgrades Milwaukee-Eight 114ci or non-CVO 117ci to 132ci or all the way to 136ci with S&S stroker flywheel # SS320-0605 * 4.320″ Bore & 4.500″ Stroke * Forged ...

KB PISTONS

$1,135.99

Features & Benefits:- * Super Duty KB Forged Coated Anodized Piston Kit. * Big bore 120″ piston kit for Milwaukee 8. * Factory 114″ and 117″ cylinders are used to bore to 4.125″. * No head m...

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CYCLE PRO LLC

$215.99

4.016″ Bore x 4.500″ Stroke * High quality, direct replacement piston ring kit * One Set Required Per Bike * Sold as a Pair. * Made in the USA * Replaces OEM # 22000061

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CYCLE PRO LLC

$215.99

3.937″ Bore x 4.375″ Stroke * High quality, direct replacement piston ring kit * One Set Required Per Bike * Sold as a Pair. * Made in the USA * Replaces OEM # 22000060

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136ci Stroker Big Bore Kit with Highlighted Fins - Black. Fits Milwaukee-Eight 2017up with S&S 4-5/8in. Stroker Flywheel. - S&S

$3,702.99

S&S has been building big bore kits since the 60s and has it down to an absolute science. Our latest efforts are aimed at the Milwaukee Eight® platform and open up a whole new level of perform...

136ci Stroker Big Bore Kit with Non-Highlighted Fins - Black. Fits Milwaukee-Eight 2017up with S&S 4-5/8in. Stroker Flywheel. - S&S

$3,702.99

S&S has been building big bore kits since the 60s and has it down to an absolute science. Our latest efforts are aimed at the Milwaukee Eight® platform and open up a whole new level of perform...

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132ci Big Bore Kit with Highlighted Fins - Black Granite. Fits CVO Milwaukee-Eight 2017up with 117ci Engine. - S&S

$3,637.99

Features & Benefits:- * Upgrades Milwaukee-Eight 117ci CVO models to 132ci * 4.320″ Bore * 4.500″ Stroke (4-1/2″) * Forged Pistons. * 11.1 Compression Ratio. * Black Granite Finish With Highl...

129ci Big Bore Kit with Highlighted Fins - Black. Fits Milwaukee-Eight 2017up with 107ci Engine. - S&S

$3,530.99

Features & Benefits:- * Upgrades Milwaukee-Eight 107ci to 129ci. * 4.320″ Bore. * 4.375″ Stroke (4-3/8″). * Forged Pistons. * 11.1 Compression Ratio. * Wrinkle Black Finish. * With Highlighted...

128ci Big Bore Kit with Highlighted Fins - Black. Fits Milwaukee-Eight 2017up 114ci Engine. - S&S

$3,637.99

Features & Benefits:- * Upgrades Milwaukee-Eight 114ci to 128ci * 114ci to 128ci Big Bore Kit * 4.250″ Bore * 4.500″ Stroke (4-1/2″) * Forged Pistons. * 11.1 Compression Ratio. * Wrinkle Blac...

132ci Big Bore Kit with Non-Highlighted Fins - Black. Fits Milwaukee-Eight 2017up 114ci or 117ci Engine. - S&S

$3,530.99

Features & Benefits:- * Upgrades Milwaukee-Eight 114ci & non-CVO 117ci to 132ci * 4.320″ Bore. * 4.500″ Stroke (4-1/2″). * Forged Pistons. * 11.1 Compression Ratio. * Wrinkle Black Finish...

129ci Big Bore Kit with Non-Highlighted Fins - Black. Fits Milwaukee-Eight 2017up with 107ci Engine. - S&S

$3,530.99