New genuine S&S 129” big bore kit for Harley Davidson Milwaukee 8 motors.

S&S is extremely well known for their performance and quality in parts for Harley Davidson. They are easily some of the best made engines and components you can buy at any price

967 Custom Cycles is an authorized dealer for Mid-USA and I can be found on their dealer locator as well as Facebook so you know you are getting genuine parts.

Photo is for reference

Weight: 28.00

Tha largest Big Bore possible with a slip in kit.

This S&S® clylinder and piston kit takes your 107" M8 to 129".

Black Cylinders with highlighted fins. Huge bore increase means huge power increase.

Works with stock crankcases (no machine work).

Powder coat finish matches factory finish.

MLS (multi-layered steel) head gaskets.

4.320" bore.

4.375" stroke.

Retains stock engine height.

Includes Cubic Inch Cam Cover Badge.

Made in the USA.

S&S CYCLE INC®

Flat rate shipping is for domestic

Please ask any questions prior to purchase and I will respond