129" Big-Bore Kit 4.375" Stroke Highlighted Cylinders
The biggest Big Bore possible with a slip in kit! These S&S cylinder and piston kits takes your 107" M8 to 129" and the 114" to 132".
- Huge displacement increase means huge power increase
- Works with stock crankcases
- Original engine serial numbers are retained
- Powder coat finish matches factory finish, giving the bike a "sleeper" advantage
- MLS (multi-layered steel) head gaskets
- Retains stock engine height
- Includes Cam Cover Badge
NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLE. Not legal for sale or use on any EPA pollution controlled motor vehicle.
Price does not include installation or dyno tuning.