Description
BMW S63 Valve Springs by SuperTech G29 Z4 Finished with avionics grade hard chrome BMIVN 1037 Exhaust Valve Diameter Length Material:33 mm 126.1 mm Black Nitride PFR5 4612 1994 1996 E34 518i Finished with avionics grade hard chrome plating and featuring a specially hardened tip 50mm Exhaust Rally Race 322° Intake 314° Exhaust 12