Supertech K/F-Series Dual Valve Spring Kit

Dual spring for high RPM Seat Pressure: 95 lbs @ 40.4 Chrome silicone vanadium steel Ultra-light titanium retainers Description Vehicle Fitment Technical Data Included When a single valve spring isn’t enough. High-performance, high-revving K-Series applications may need a dual valve spring to produce adequate seat pressure, open pressure, and spring rate for the camshaft of choice. This Supertech kit does just that with springs producing seat pressure of 95 LBS and 261 LBS of pressure fully open. The provided ultra-light titanium retainers, combined with the springs, help the valves snap back to their seated position, eliminating valve float.   This kit comes with 16 of each: dual valve springs, retainers, and seat locators. Supertech springs are made from Super Clean Chrome Silicone Vanadium Steel Alloy. This material is selected for its ability to handle high stress, but also the ‘memory’ to compress and return to form, time after time, cycle after cycle.     Fits these engines:  F20C  F22C  K20A  K20A2  K20Z1   K20Z3  K24A2  K24Z3    Seat Pressure: 95 @ 40.4 Open Pressure: 261 @ 12  Max Lift: 15.3mm  Coil Bind: 22.7mm  InnSpr.ID: 15.50mm  Rate: 13.2  Kit spring: SPR-H1021D  Kit spring qty: 16  Retainer: RET-K20A2/T2  Retainer qty: 16  Seat Locator: SEAT-H1020DS  InnSpr.OD: 21.30mm  OutSpr.OD: 30.00mm  OutSpr.ID: 21.80mm  Seat Locator qty: 16    (16) Springs: SPR-H1021D (16) Retainers: RET-K20A2/T2  (16) Seat locators: SEAT-H1020DS