Description
Features & Benefits:-
* Includes 10cc Dome Forged Pistons.
* Includes 0.045″ Head Gaskets.
* 3.937″ Bore.
* 4″ Stroke.
* 10.3:1 Compression Ratio with Stock 85cc Heads.
* 9.9:1 Compression Ratio with S&S 89cc Heads # SS106-4270.
Tech Tips:-
* Will Not Fit with S&S 79cc Heads.
Proudly Made in the USA by S&S Cycle !