Engines and Components› Pistons and Piston Rings
CP Pistons
CP Pistons 17-22 Harley Milwaukee Eight 143 ci, 4.500in Bore, 4.500in Stroke, 12.0:1 CR, 1.080in CH
SKU: C00A M5152
Moderate — 2–4 hours
Description
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | CP Pistons |
| Part Number | C00A M5152 |
Videos
BIG HORSEPOWER Kit Breakdown by Moonshine Horsepower | 131, 135, 139, & 143 MONSTER Horsepower
How to assemble a 143 CUBIC INCH Harley Davidson Milwaukee 8! (Part 1)
How to Install a Big Bore Kit In a Milwaukee Eight Engine | Weekend Wrenching
Monster 143 Cubic Inch Milwaukee 8 Engine Build (Part 2)
15K Harley Davidson Milwaukee Eight Engine Build (Harley M8)
124ci RoadGlide / Performance Bagger Build / APE
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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