Supertech M50 / M52 / M54 double valve spring kit ST-SPRK-H1000D-BM

All Supertech valve springs are made of Superclean premium chrome vanadium steel alloy for higher performance and durability at high RPM. The use of a high quality steel alloy provides the added benefit of better structural memory for all our springs. Our valve springs are computer designed, to ensure stress levels do not exceed the stress limits specified in the fatigue charts. Combined with our high-quality steel alloy, it gives Supertech valve springs greater strength in extreme conditions, giving the racing engine a serious advantage in both performance and durability. Supertech tappets are Manufactured from high-quality military-certified titanium alloy and CNC machined for a tight fit, our high-quality tappets are among the best in the industry. Fits: BMW M50 / M52 / M54 & nbsp