91 cc Super Stock® Cylinder Heads

Cylinder Heads - 91 cc - Super Stock™ - Twin Cam

• Designed specifically for S&S® T-Series T2 long block engines for Harley Davidson® big twins and engines with S&S® 4-1/4" bore Hot Set Up installed
• 2.000" intake and 1.605" exhaust valves coupled with S&S® ports, supply plenty of air for these big motors
• S&S® High performance valve springs allow the installation of camshafts with up to .650" lift
• Compatible with stock rocker boxes, exhaust, and intake manifolds
• Manifold mounting surface is machined to stock dimensions
• Made in the USA
• A special manifold/throttle body is required for engines that are not stock height.
• Not machined for compression releases.
• Must use S&S valve cover gasket kit with stock rocker covers.
• Not compatible with '14-'16 FLHTK/FLHTKL, FLHTCUTG Twin-Cooled motors or '17 touring models.

Special instructions: N/F USE W/COMP RELEASES ?25PJL