S&S Cycle 106-6059 S&S® Performance Replacement Standard Compression 76cc Cylinder Heads For 1984-'99 HD® Big Twins - Natural Aluminum Finish Zippo 5" 13" 7" 13" 14"

5" 13" 7" 13" 14" 29

5" Wide/8" Sweep

throttle position

This declaration celebrates the future generation of riders

plus two outer slash pockets

S&S Cycle 106-6059 S&S® Performance Replacement Standard Compression 76cc Cylinder Heads For 1984-'99 HD® Big Twins - Natural Aluminum Finish Zippo 5" 13" 7" 13" 14"S&S Cycle 106 6059 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 76cc combustion chamber that gives a slight increase in compression for great results with most performance cams. 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.