Engines and Components› Pistons and Piston Rings
CP Pistons
CP Pistons 17-22 Harley Milwaukee Eight 124ci, 4.250in Bore 4.375in Stroke Piston Kit
SKU: C00A M5102
Advanced — 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 M5102 |
Videos
How to Install a Big Bore Kit In a Milwaukee Eight Engine | Weekend Wrenching
124CI Installing Cylinders & Pistons | Shop Talk Episode 21
*PISTON & CYLINDER INSTALL* Milwaukee 8 Engine Build M8 128 *PART 4* - Kevin Baxter - Baxters Garage
WATCH THIS BEFORE YOU UPGRADE TO A 124 OR 128 BIG BORE KIT ON YOUR M8 HARLEY DAVIDSON
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.
View Full Return Policy