LS1 Extreme Duty Asymmetrical FSR Flat Top Forged Piston J321240 Product:3.905" bore, 3.622" stroke, 6.098" rod length, -2cc dome volume To ensure that the damper

To ensure that the damper is locked in position

AF9551-1003

BRA-37138-AC

AF9506-2012

This kit suits the 12 inch Wilwood brake kits or the billet Dynalite / Dynapro lug mount calipers

LS1 Extreme Duty Asymmetrical FSR Flat Top Forged Piston J321240 Product:3.905" bore, 3.622" stroke, 6.098" rod length, -2cc dome volume To ensure that the damperLS1 Extreme Duty Asymmetrical FSR Flat Top Forged Piston3. 905" bore, 3. 622" stroke, 6. 098" rod length, 2cc dome volume J321240 21240 We have redesigned and expanded our GM LS1 series product lines! These new pistons utilized our dedicated Forged Side Relief (FSR) forging that was specifically designed for high output GM LS1 series engines. In addition we have found ways to reduce weight and maintain the durability needed for both street and racing