S&S Cycle 106-6059 S&S® Performance Replacement Standard Compression 76cc Cylinder Heads For 1984-'99 HD® Big Twins - Natural Aluminum Finish Audio From the bold outline-font Harley-Davidson®

From the bold outline-font Harley-Davidson® Motorcycles signature to the detailed wings and defiant skull

1996-2017 FXD Dyna models (Except: 16-17 FXDLS)

Drag Specialties 1741-2624

1995-2013 Harley-Davidson Electra Glide Ultra Classic EFI FLHTCUI

Arlen Ness 410-060

S&S Cycle 106-6059 S&S® Performance Replacement Standard Compression 76cc Cylinder Heads For 1984-'99 HD® Big Twins - Natural Aluminum Finish Audio From the bold outline-font Harley-Davidson®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.