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 # SS90-1106.
Suggested Additional Purchase:
Dual spray piston cooling jet kit # SS310-1251
Tech Tips:-
* Will Not Fit with S&S 79cc Heads.
Proudly Made in the USA by S&S Cycle !
MFR PART No: 910-0481
ROLLIES PART No: SS910-0481
