BMW N54/N55/S55 Turbo Conical 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
- InnSpr.OD: 21mm
- InnSpr.ID: 14.2mm
- Seat Pressure: 75 @ 36.5
- Open Pressure: 155 @ 10
- Max Lift: 12mm
- Coil Bind: 23.2mm
- Rate: 8
- Kit spring: SPR-FE20BE
- Retainer: RET-BMN54-TI (5mm) / RET-BMN54-TE (6mm)
- OutSpr.OD: 24.4mm
- OutSpr.ID: 17.6mm
Benefits
- Underwent a gas nitriding process before shot peening for improved fatigue life
Please Note: Use Factory Valve Stem Seal
Applications
- 2007-2010 BMW 135i
- 2006-2010 BMW 335i
- 2011-2013 BMW 335is
- 2007-2010 BMW 535i
- 2008-2012 BMW 740i
- 2008-2010 BMW X6
- 2009-2016 BMW Z4
What’s In The Box?
- 24 – Springs
- 24 – Retainers
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.
