S&S Super Stock Natural Cylinder Head Kit for Harley Davidson 1984-99 Evo Big Twin with 3.5 in. bore Colors:Tan Twist the throttle and watch

Twist the throttle and watch the hotrod-styled vacuum-operated butterflies mesmerize onlookers

creating unparalleled comfort and performance

with no restrictive urethane residue on the filter element

1993 Harley Davidson FXRS-SP Low Rider Sport

S&S Super Stock Natural Cylinder Head Kit for Harley Davidson 1984-99 Evo Big Twin with 3.5 in. bore Colors:Tan Twist the throttle and watchS&S Super Stock Natural Cylinder Head Kit for Harley Davidson 1984 99 Evo Big Twin with 3. 5 in. bore High flowing ports and a specially shaped combustion chamber and contoured piston dome are what make these heads produce power. The increased "squish" area of this design sets up a controlled turbulence in the combustion chamber. That turbulence improves flame travel for a more efficient burn and reduced detonation. Special Super Stock pistons are