Features & Benefits
- Available 117 M8 models
- 117 to 128" big bore kit
- Black Granite with Highlighted Fins
- Bolt on kit. No Machining Required
- includes gaskets and hardware required for installation
- 4.250" bore
- Forged Pistons
- 11:1 compression ratio
***We recommend using S&S Cycle Head Bolts for M8, part number 900-1006 for all big bore applications.
Not recommended for Tri-Glide or other three wheel models including conversion due to lugging nature of these bikes.
DISCLAIMER:
FOR CLOSED COURSE COMPETITION USE ONLY. NOT INTENDED FOR STREET USE. LEGAL IN CALIFORNIA ONLY FOR RACING VEHICLES WHICH MAY NEVER BE USED, OR REGISTERED OR LICENSED FOR USE, UPON A HIGHWAY.
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Power and Reliability
Upgraded my 2018 CVO to this kit and rode my bike on a 2700 mile trip with absolutely zero issues. The Harley mechanic said installation was a breeze with very detailed instructions.
510-0481-4-25-bore-for-m8.pdf
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