Supertech Beehive Valve Springs for Nissan Skyline RB25DET NEO 24v 2.5L Engines

Supertech Beehive Valve Springs for Nissan Skyline RB25DET NEO 24v 2.5L EnginesSet of 24 Beehive Valve SpringsSPR-M1007BE-RB25NOuter Spring: OD 28.00mm - ID 18.80mmInner Spring: NoneType: Single SpringPress.Seat: 78lbs @ 38.70mmMax Lift: 15.30mmCoil Bind: 22.80mmRate: 12.80mmNote: These Beehive Valve Springs require the use of Supertech Retainer Part # RET-N55/TBE - (Sold Separately)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 utilize computer software that allows us to ensure that the harmonics are under control. All Supertech valve springs are made with premium super clean Chrome Silicon Vanadium Steel alloy for higher performance & durability at high rpms. Using high quality steel alloy also provides the added benefit of better structural memory for all of our springs, giving your performance racing engine a serious competitive advantage.