Supertech Dual Valve Spring and Titanium Retainer Kit for Toyota Supra 7MGTE 24v Turbocharged Engines

Dual Valve Spring and Titanium Retainer Kit for Toyota Supra 7MGTE 24v Turbocharged EnginesSet of 24 Dual Valve Springs, 24 Titanium Retainers, Seats, Valve Guides & SealsSPRK-TC25D/24Type: Dual SpringOuter Spring: OD 25.00mm - ID 18.00mmInner Spring: OD 18.00mm - ID 13.00mmPress.Seat: 67lbs @ 36.00mmMax Lift: 14.40mmCoil Bind: 21.00mm 17.00mmRate: 12.60mmRetainer: RET-2500/T1Spring: SPR-TC25DSeat: SS-3012Valve Guides: GDE-4AGE-SM (Required)Valve Seals: VS-T6SM (Required)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 yo