Supertech Dual Valve Spring Kit Used w/Lash Caps/No OEM Shims | Multiple BMW Fitments (SPRK-2521/2BM-T1S-LC)

BMW M3/Z3/Z4 Dual Valve Spring Kit - Set of 24 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 Rate: 10mm Kit spring: SPR-2521/2 Kit spring qty: 24 Retainer: RET-BM2521/T1S-LC Retainer qty: 24 InnSpr.ID: 14.5mm 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 2001-2006 BMW M3 2001-2002 BMW Z3 2006-2008 BMW Z4 What's In The Box? 24 - Springs 24 - Retainers 24 - Seat Locators Warranty Due to the nature of the application, these parts are sold without any express warranty or any implied warranty of merchantabi