AFR High Performance Intake Valve - 2.300 in Head - 11/32 in Valve Stem - 5.500 in Long - Stainless - Big Block Chevy 10287 1 helmet's rear facing chin Size:Small (55-56) 8174 40 Delta Force SIMHYPLSML11SASPA

1 helmet's rear facing chin bar vents and top vent provide ventilation while preventing dirt and dust from entering the helmet

heat-treated steel design that is both stronger and lighter than the original

3/8 in NPT Female Outlet

Much lighter

The Zamp RZ-18H Open Face Auto racing helmet is lightweight with a composite Fiberglass shell

AFR High Performance Intake Valve 2.300 in Head 11 32 in Valve Stem 5.500 in Long Stainless Big Block Chevy 10287 1 helmet's rear facing chin Size:Small (55 56) 8174 40 Delta Force SIMHYPLSML11SASPA 1 helmet's rear facing chin bar vents and top vent provide ventilation while preventing dirt and dust from entering the helmet heat treated steel design that is both stronger and lighter than the original