Sport Inner Wear SFI-1 Top, Black Product Option:Sport Inner Wear SFI-1 Top, Black Features: Fits Holley Model 4150

Features: Fits Holley Model 4150 and Model 4160 1 9/16" Throttle Bore 1/4" Thick

Piston Rings designed to minimize Cylinder Leakage

28oz External BalanceSuit Ford 289-351W & Boss

CB927HN 010

Extra Capacity 3" Deep

Sport Inner Wear SFI-1 Top, Black Product Option:Sport Inner Wear SFI-1 Top, Black Features: Fits Holley Model 4150Pyrotect's ultra thin INNER WEAR is designed for use with any driving suit, and is as soft as cashmere and as absorbent as cotton! Talk about comfort. It is SFI rated (SFI label attached) for use as underwear but is also designed so it can be worn under Nomex underwear for added TPP protection or under crew uniforms for added fire protection.