BMW S63 Valve Springs by SuperTech 1301004 68 A/R with 3 5/8"

68 A/R with 3 5/8" V-Band discharge

fuel pump control

Using Custom Age 625+ head studs enables you to increase boost levels without worrying about the cylinder head lifting

Street car owners can benefit from smoother acceleration and mid-range power

6 cyl BMW M52 / M54 Pro-H 3/8

BMW S63 Valve Springs by SuperTech 1301004 68 A/R with 3 5/8"Enhance the performance of your BMW S63 engine with the SuperTech High Performance Valve Spring Kit. This precision engineered kit offers a notable seat pressure of 83 lbs and accommodates a maximum lift of 12 mm, ensuring optimal valve operation even at high RPMs. Designed to replace OEM part numbers: 11340039494, 11340054492, 11347578825, 11347572451, 11347504271, 11347614134, and 11340150843, this kit is the ideal upgrade for serious enthusiasts