S&S Cycle Performance Replacement Head

S&S Performance Replacement cylinder heads for 1986-'99 HD Evolution big twin engines are designed to be compatible with a stock style flat topped piston. This set has a slightly larger 82cc combustion chamber making them idea for larger displacement applications, producing a managable compression ratio. These heads are original equipment on S&S V96 and V80 engines. Larger than stock 1.900" intake and 1.575" exhaust valves provide plenty of air while maintaining port velocity for good low and midrange response. S&S high lift valve springs allow the installation of cams with up to.585" lift. Compatible with stock intake manifolds, exhaust systems, and temperature sensors for EFI equipped models. Finish. Silver.