S&S 107ci Big Bore Kit – Black. Fits Twin Cam 2007-2017.

Description

Features & Benefits:-

* Includes 3cc Dome Forged Pistons.

* Includes 0.045in. Head Gaskets.

* 3.937in. Bore.

* 4-3/8in. Stroke.

* 10.5:1 Compression Ratio with Stock 85cc Heads.

* 10.1:1 Compression Ratio with S&S 89cc Heads # SS106-3240.

Suggested Additional Purchase:

Dual spray piston cooling jet kit # SS310-1251

Tech Tips:-

* Use Care during assembly to avoid damage to Cylinder Spigots.

* Ring gaps must be checked & Recorded b