KVS38-BT | VR38DETT Extreme Valve Springs

Extreme Beehive Valve Spring and Titanium Retainer kit for the Nissan VR38DETT Engine. Designed for extreme boost and high RPM racing engines. Made from ultra clean Silicon Chrome spring steel with a higher fatigue resistance compared to other spring steels. Heat treating and post processing is the highest quality available. High frequency spring design to reduce spring surge at high operating RPM. This kit is designed for the most powerful VR38 engines on the planet. 130lb seat pressure at 34.60mm installed height. 250lbs at 11.0mm valve lift. Coil bind at 22.0mm. Kit contains 24 springs, 24 retainers, 12 intake spring seats, 12 exhaust spring seats. Put the 1mm seat on the exhaust. 4mm seat on the intake.