Supertech Dual Valve Springs for Nissan GTR VR38DETT 24v 3.8L V6 Engines

Dual Valve Springs for Nissan GTR VR38DETT 24v 3.8L V6 EnginesSet of 24 Dual Valve SpringsSPR-TS1015/GTRType: Dual SpringOuter Spring: OD 27.50mm - ID 20.00mmInner Spring: OD 20.00mm - ID 15.20mmPress.Seat: 88lbs @ 34.2mmMax Lift: 13.50mmCoil Bind: 20.70mmRate: 12.10mmSPR-TS1012/GTRType: Dual SpringOuter Spring: OD 27.50mm - ID 20.00mmInner Spring: OD 20.00mm - ID 15.20mmPress.Seat: 78lbs @ 34.2mmMax Lift: 14.20mmCoil Bind: 20.00mmRate: 10.50mmNote: These Dual Valve Springs require the use of Supertech Part #'s RET-TS5.5/T8 - T9 & SEAT-TS/GTR - GTR-2 - (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