JE Pistons GM LS 4.075in Bore .010 LS3 Oversize -29.7cc Asymmetrical FSR Dish Pistons - 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.