7" Left Front rebound adjustable Pro sprint car shock New valve body with 32 clicks for fine adjustment Low speed adjustable for ultimate driver feel New steel billet piston design for internal sealing and enhanced endurance Individually dynoed and serial numbered Left Front rebound adjustable PRO shock. New valve body with 32 click for fine adjustment. Low speed adjustable for ultimate driver feel. New steel billet piston design for internal sealing and endurance. Individually dynoed and serial numbered.