Supertech Dual Valve Spring Kit | Multiple BMW Fitments (SPRK-2521-2BM-T1)

BMW S54B32 Dual Valve Spring Kit by Supertech Supertech Spring / Retainer kits are precision matched sets for a complete valvetrain overhaul. Developed for the performance enthusiast that wants the best the industry has to offer, Supertech Spring / Retainer kits are second to none in terms of performance, quality and value. Features Seat Pressure: 82lbs@41mm Open Pressure: 186lbs@10mm Max Lift: 14.5mm Coil Bind: 24.50mm InnSpr.ID: 14.5mm Rate: 10mm Kit spring: SPR-2521/2 Retainer: RET-BM2521/T1 InnSpr.OD: 19.3mm OutSpr.OD: 26.4mm OutSpr.ID: 19.3mm Seat Locator: SEAT-BMS54 Benefits Underwent a gas nitriding process before shot peening for improved fatigue life Applications 2000-2006 E46 M3 2000-2002 E36/7 Z3 M Roadster, E36/8 M Coupé 2006-2008 E85 Z4 M Roadster, E86 Z4 M Coupé What's In The Box? 24 - Springs 24 - Retainers Seat Locators Warranty Due to the nature of the application, these parts are sold without any express warranty or any implied warranty of me