S&S, cylinder head kit. Black, .650" valve lift

High performance cylinder head kit that works well with engines from standard up to 110" capacity. 89cc combustion chamber provides a slightly higher, but still manageable compression ratio in larger engines. A good choice for touring motorcycles and other heavy engines.

The installed S&S High Performance valve springs allow the installation of camshafts with up to .650" lift. Compatible with standard bolt patterns on crankcases, rocker boxes, exhaust and intake manifolds. Machined for S&S electric or manual compression release units (sold separately if needed).

The large 2.000" intake valves and 1.605" exhaust valves maintain good port velocity for strong low- and mid-range response, while delivering sufficient air for slightly larger engines to perform to their full potential. The intake ports deliver 264 cfm (Cubic Feet per Minute) of air compared to the standard cylinder heads' 182 cfm. Wrinkle black powder-coated finish matches the standard black engine parts.

Suitable for:

06-16 Twin Cam with standard crankcases (NU)