S&S Cycle

S&S Cycle 1984+ BT/86-03 XL Stock Heads Head Bolt Kit

Inspired by our Pro Stock Drag Race engines, these updated big bore kit utilizes a Ductile Cast Iron liner wrapped in cast aluminum for optimum thermal conductivity and performance. Bolt-in kits do...

This bolt-in big bore kit is easy to install, and requires no machining or rebalancing. This is the largest bore (3.937") that can be fit in a stock engine case. Stock engine height is maintained so...

The S&S forged steel roller rocker arms were designed for superior strength and to eliminate the failure-prone stress areas found in some other rockers.

Includes: Springs, Top Collars, Keepers, Bottom Collar/SealsThis Part Fits:YearMakeModelSubmodel2017-2021Harley-DavidsonFLHR Road KingBase2017-2021Harley-DavidsonFLHRXS Road King...

Street Performance .585 in. Valve Spring Kit for 2005-2017 Twin Cam 88® Big Twins with stock heads (both 7mm) and 2004-Up XL models