Supertech Beehive Valve Spring and Titanium Retainer Kit for 2005-2010 BMW M5 (E60) S85 40v 5.0L V10 Engines

Supertech Beehive Valve Spring and Titanium Retainer Kit for 2005-2010 BMW M5 (E60) S85 40v 5.0L V10 Engines Set of 40 Beehive Valve Springs, 40 Titanium Retainers & Seats SPRK-BMS65-BE1 Type: Beehive Spring Press.Seat: 77lbs @ 40.10mm Max Lift: 12.20mm Coil Bind: 27mm Rate: 10.30mm Retainer: RET-BMS65-BE1 Spring: SPR-BMS65-BE1 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 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 quality steel alloy also provides the added benefit of better structural memory for all of our springs, giving your performance racing engine a serious competitive advantage. 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.