Cylinder Heads - 79 cc - Super Stock® - Twin Cam Mount Mounts to the factory rear

Mounts to the factory rear rocker box top on M8 engines

Flywheel Assembly - 4-3/8" - with Sprocket Bearing Race - Twin Cam "B" '99-'06 (except '06 Dyna)

Comes with one 5/16-24 x 7/8" SCHS

Provides excellent lubricity and control foaming plus protects suspension system against corrosion

Cylinder Heads - 79 cc - Super Stock® - Twin Cam Mount Mounts to the factory rearCylinder Heads 79 cc Super Stock Twin Cam Heads are fully assembled with springs and valves Works great with 88" to 103" stock motors, but are ideal for larger stroker or big bore engines up to 110" Large 1. 940" intake and 1. 575" exhaust valve maintain port velocity for good low and midrange response, but supply enough air for stock and slightly larger engines to perform to their full potential S&S High performance valve springs allow the