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
