Head, Kit, 4-1/8" Bore, Stock Bolt Pattern,.650" Steel,w/o C

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 Manifold mounting surface is machined to stock dimensions A special manifold/throttle body is required for engines that are not stock height. 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 Not machined for compression releases. Must use S&S valve cover gasket kit with stock rocker covers. Made in the USA Not compatible with '14-'16 FLHTK/FLHTKL, FLHTCUTG Twin-Cooled motors or '17 touring models.