Supertech Dual Valve Spring 85lbs at 34.8mm Toyota 4AGEC

All Supertech valve springs are made with premium Superclean Chrome Silicon Vanadium Steel alloy for higher performance durability at high rpms. Using high quality steel alloy allso provides the added benefit of better structural memory for all of our springs.

Our valve springs are computer designed to ensure that wire stress levels do not overpass the limits of stress defined in the diagrams of fatigue. We also utalize computer software that allows us to ensure that the harmonics are under control. This combined with our high quality steel alloy enables supertech valve springs to be more durable in extreme conditions, giving your performance racing engine a serious competitive advantage in both perforamnce and durablity.