Supertech SPRK-2521/2BM-T1S dual valve springs with titanium retainers BMW E46 M3 S54B32

For: BMW E46 M3 with S54B32 engines

Please note! To be use with single groove valves and keepers KPR-6S/7 (sold seperately). For standard triple groove valves correct kit is SPRK-2521/2BM-T1T.

All Supertech valve springs are made with premium Superclean Chrome Silicon Vanadium Steel alloy for higher performance & durability at high rpms. Using high quality steel alloy allso provides the added benefit of better structural memory for all of our springs.

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 utalize computer software that allows us to ensure that the harmonics are under control. This combined with our high quality steel alloy enables supertech valve springs to be more durable in extreme conditions, giving your performance racing engine a serious competitive advantage in both perforamnce and durablity.

Supertech retainers are manufactured with high quality military certified Titanium alloy, and are CNC machined for a tight fit. Our high quality retainers are among the best in the industry.

• Type: Dual springs
• Press.Seat: 82 @ 41
• Max Lift: 15.5mm
• Coil Bind: 25.5mm
• Rate: 10mm
• Retainer: RET-BM2521/T1S
• Spring : SPR-2521-BM
• Seat Locator : SEAT-BMS54