BMW M50 M52 S50 S52 Valve Springs by SuperTech

Supertech high-performance valve springs for BMW M50, M52, S50, and S52 engines are engineered to meet the demands of high-RPM use with unmatched reliability and performance. Utilizing Superclean Chrome Silicon Vanadium Steel alloy, these valve springs ensure exceptional strength, structural memory, and longevity under intense conditions. The advanced computer-aided design minimizes wire stress and effectively manages valve harmonics, leading to optimized performance for racing applications. Included are Supertech's precision CNC-machined titanium retainers, crafted from military-certified alloy to guarantee an accurate fit and lighter valvetrain weight. Supertech’s quality and precision provide superior durability, making them the ideal choice for enthusiasts seeking maximum reliability for their BMW's performance engine. Installation requires the expertise of an engine builder. Seat Pressure Options:80 lbs Seat Pressure: 80lbs@35.70mm Open Pressure: 195lbs@10mm Max Lift: 12.70mm Coil Bind: 20.70mm InnSpr.OD: 20.50mm InnSpr.ID: 15.50mm Rate: 11.50lbs/mm Kit spring: SPR-H1000D Kit spring qty: 24 Retainer: RET-AUVE/T1 Retainer qty: 24 Seat Locator: SEAT-BM60 OutSpr.OD: 29.65mm OutSpr.ID: 21.85mm Seat Locator qty: 24 94 lbs Seat Pressure: 94lbs@35.70mm Open Pressure: 209lbs@10mm Max Lift: 12.50mm Coil Bind: 20.70mm InnSpr.OD: 20.50mm InnSpr.ID: 15.50mm Rate: 11.50lbs/mm Kit spring: SPR-H1005D Kit spring qty: 24 Retainer: RET-AUVE/T1 Retainer qty: 24 Seat Locator: SEAT-BM60 OutSpr.OD: 29.65mm OutSpr.ID: 21.85mm Seat Locator qty: 24 BMW M50 Applications: 3 Series 1990-1995 E36 320i / 325i / 325is1994-1996 E35/E36 318ti 5 Series 1990-1996 E34 520i / 525i1991-1996 E34 Touring 520i / 525i Z Series 1995 E36/E37 Z3 2.0i / 2.5i BMW M52 Applications: 3 Series 1994-1999 E36 320i / 323i / 323is / 328i / 328is1997-2000 E35/E36 318ti / 323ti 5 Series 1996-1998 E39 520i / 523i / 528i 7 Series 1996-1998 E38 728i / 728iL Z Series 1996-1999 E36/E37/E38 Z3 2.0i / 2.2i / 2.8i BMW S50 US Applications: 3 Series 1994-1995 E36 M3 BMW S52 Applications: 3 Series 1996-1999 E36 M3 Z Series 1998-2000 E36/E37/E38 Z3M