Supertech Dual Valve Spring and Steel Retainer Kit for 1999-2000 Honda Civic Si B16 B16A B16A2 B16A3 VTEC Engines

Dual Valve Spring and Steel Retainer Kit for 1999-2000 Honda Civic Si B16 B16A B16A2 B16A3 VTEC EnginesSet of 16 Dual Valve Springs and 16 Steel Retainers SPRK-H100DR-STType: Dual SpringOuter Spring: OD 30.20mm - ID 22.20mmInner Spring: OD 22.20mm - ID 16.80mmPress.Seat: 85lbs @ 35.5mmMax Lift: 15.00mmCoil Bind: 18.50mmRate: 12.50mmRetainer: RET-HBK-STSpring: SPR-H100DRSPRK-H1002D-STType: Dual SpringOuter Spring: OD 29.05mm - ID 21.85mmInner Spring: OD 20.50mm - ID 15.50mmPress.Seat: 70lbs @ 33.5mmMax Lift: 14.00mmCoil Bind: 19.50mmRate: 10.00mmRetainer: RET-HBK-STSpring: SPR-H1002DOur 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 qual