
Supertech Dual Valve Spring and Titanium Retainer Kit for Ford Focus RS & Ford Mustang 2.3L EcoBoost Engines
Supertech Dual Valve Spring and Titanium Retainer Kit for Ford Focus RS & Ford Mustang 2.3L EcoBoost EnginesSet of 16 Dual Valve Springs, 16 Titanium Retainers & SeatsSPRK-TS1012-FE2Outer Spring: OD 27.50mm - ID 20.00mmInner Spring: OD 20.00mm - ID 15.20mmType: Dual SpringPress.Seat: 77lbs @ 34.30mmMax Lift: 13.00mmCoil Bind: 20.00mmRate: 9.60mmRetainer: RET-TS55-T1Spring: SPR-TS1012-FE2Seat: SEAT-DUR1SPRK-TS1015-FE2Outer Spring: OD 27.50mm - ID 20.00mmInner Spring: OD 20.00mm - ID 15.20mmType: Dual SpringPress.Seat: 84lbs @ 34.30mmMax Lift: 13.00mmCoil Bind: 20.70mmRate: 12.10mmRetainer: RET-TS55-T1Spring: SPR-TS1015-FE2Seat: SEAT-DUR1Our 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 hi