S&S CYCLE S&S® Super Stock® 91cc Cylinder Heads For For S&S® T-Series T2 Complete Engines and 2006 HD® Dyna® Models and All '07-'16 Models With S&S® 4-1/8" Bore Hot Set Up Kit - Black Wrinkle Powder - 900-0349

These S&S^® Super Stock^® high performance cylinder heads are designed specifically for S&S^® T-Series T2 long block engines for 2007-'16 HD^® big twins and 2007-'16 engines with S&S^® 4-1/4" bore Hot Set Up Kit installed. 2.000" intake and 1.605" exhaust valves coupled with S&S^® ports, supply plenty of air for these big motors. Not machined for S&S^® compression releases. The manifold mounting surface is machined to stock dimensions, so 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. Black wrinkle coat finish matches stock black engine components

• High port flow gives great performance now, and more later when additional upgrades are done
• Heads are fully assembled with springs and valves
• Compression ratios vary depending on cylinder heads chosen, pistons used and engine displacement; see Compression Ratios chart for specifications
• 79cc heads work great with stock motors for 88" to 103" motors; 89cc heads work best for motors over 103" or with high-compression pop-up pistons
• 79cc have 1.940" intake and 1.575" exhaust valve and springs for up to .640" lift; 89cc have 2.000" intake and 1.605" exhaust and .640" springs
• Heads are machined for compression releases unless noted otherwise (sold separately); S&S rocker boxes required when using S&S compression releases
• Do not include rocker arm components, intake manifold or gaskets
• Heads include four long headbolts, and reuse four long OEM headbolts
• Accept OEM intake manifolds
• Made in the U.S.A.
• Must use S&S rocker boxes (PART #90-4110) if S&S compression releases are used.
• Not compatible with Twin Cooled heads.

Fitment Guide

Specs