Supertech Dual Valve Spring and Titanium Retainer Kit for Toyota GR Supra B58B 24v Turbocharged Engines

Dual Valve Spring and Titanium Retainer Kit for Toyota GR Supra B58B 24v Turbocharged EnginesSet of 24 Dual Valve Springs & 24 Titanium RetainersSPRK-B58BType: Dual SpringOuter Spring: OD 24.40mm - ID 17.60mmInner Spring: OD 21.00mm - ID 14.20mmPress.Seat: 75lbs @ 37.00mmMax Lift: 12.20mmCoil Bind: 23.20mmRate: 8.00mmRetainer: RET-BMB48/TI - RET-BMB48/TESpring: SPR-FE20BESPRK-B58B-2Type: Dual SpringOuter Spring: OD 24.40mm - ID 17.60mmInner Spring: OD 21.00mm - ID 14.20mmPress.Seat: 84lbs @ 37.00mmMax Lift: 12.20mmCoil Bind: 23.20mmRate: 7.25mmRetainer: RET-BMB48/TI - RET-BMB48/TESpring: SPR-FE20BE-2Our 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