Supertech Dual Valve Spring Kit w/ Steel Retainers | Multiple BMW Fitments (SPRK-2521/2BM- ST)

BMW S54B32 Dual Valve Spring Kit w/ Steel Retainers 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/T2
• InnSpr.OD: 19.3mm
• OutSpr.OD: 26.4mm
• OutSpr.ID: 19.3mm
• Seat Locator: SEAT-BMS55

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 merchantability, or fitness for a particular purpose.