VALVE SPRING KIT for Mini R53
The Supertech valve spring kit for the Mini R53 is a complete, matched valvetrain package — springs, retainers, and spring seat locators — engineered to work together so installation is straightforward and clearance issues are eliminated.
The dual valve spring set is built from premium Superclean spring steel to control valve motion at high RPM, reduce valve float and support aggressive cam profiles in the Mini R53, and is matched with titanium retainers.
KEY FEATURES
- Dual Valve Spring design
- Seat pressure: 76lbs @ 34.80mm
- Open pressure: 198lbs @ 10.00mm
- Spring rate: 12.10lbs/mm
- Max lift: 14mm
- Safe RPM: 8000
- Titanium retainers included
- Complete matched kit for the Mini R53
APPLICATIONS
Recommended for any Mini R53 build running aggressive cams, increased RPM ceilings or forced induction. Verify installed spring height and confirm retainer-to-seal clearance during assembly.