Supertech Beehive Valve Spring and Titanium Retainer Kit for Mazda MZR / Duratec 2.0L 2.3L 2.5L Engines

Beehive Valve Spring and Titanium Retainer Kit for Mazda MZR / Duratec 2.0L 2.3L 2.5L EnginesSPRK-TS1012-BE-DUR1Type: Beehive Spring Press.Seat: 60lbs @ 35.5mm Max Lift: 13.00mm Coil Bind: 21.80mm Rate: 10.40mm Retainer: RET-TS5.5/T1F-BESpring: SPR-TS1012-BE-DUR1 Seat: SEAT-DUR1 + OEM SeatSPRK-TS1015-BE-DUR1Type: Beehive Spring Press.Seat: 70lbs @ 35.5mm Max Lift: 12.50mm Coil Bind: 21.80mm Rate: 12.70mm Retainer: RET-TS5.5/T1F-BE Spring: SPR-TS1015-BE-DUR1Seat: SEAT-DUR1 + OEM SeatSPRK-TS1015-BE-DUR2Type: Beehive Spring Press.Seat: 82lbs @ 34.5mm Max Lift: 11.75mm Coil Bind: 21.80mm Rate: 12.70mm Retainer: RET-TS55/EX-BESpring: SPR-TS1015-BE-DUR2Seat: SEAT-DUR1 + OEM SeatOur 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 Silico