JE Pistons Forged Dome Piston Set - 4.530 in Bore - 0.075 x 0.064 x 0.218 in Ring Grooves - Plus 22.30 cc - Big Block Chevy (Set of 8) Sprint Car Driveline & Rear End 8 mm Valve

8 mm Valve

rigid shield provides excellent thermal protection up to 1300F with minimal gap of 1 inch to heat source

Relief hole in cover uses screw in plug instead of pressed cup plug

No choke for unobstructed airflow

JE Pistons Forged Dome Piston Set - 4.530 in Bore - 0.075 x 0.064 x 0.218 in Ring Grooves - Plus 22.30 cc - Big Block Chevy (Set of 8) Sprint Car Driveline & Rear End 8 mm ValveAs the leader in forged racing pistons, JE Pistons has applied over 75 years of experience to its wide range of premium forged pistons for domestic applications. Engineered, forged and machined 100% in the USA, JE Pistons are designed for each specific engine and racing application to provide the ultimate combination of durability and performance. From dirt track to drag strip, JE Pistons? performance is proven in victory lane time and time again.