JE Pistons GM LS 4.005in Bore .005 Oversize -7.2cc Asymmetrical FSR Dish/Inverted Dome - Set of 8

JE Pistons asymmetrical FSR (Forged Side Relief) piston line incorporates modern forging design with a larger skirt on the major thrust side and smaller, friction-reducing skirt on the minor thrust side. Combined with precision CNC machining, the result is a high-strength, lightweight piston that is extremely durable.