Supertech Performance Valve Spring & Retainer Kit - R52/R53 MINI (S & JCW) | SPRK-TS1015-MC
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This valve spring and retainer kit is for performance built engines that demand it.
Dual Valve Spring for Triple Groove Valves.
Specs:
- Inner Spring (OD/ID): 20mm / 15.2mm
- Coil Bind: 20.7mm
- Pressure (Open): 210lbs@11mm
- Rate: 12.1lbs/mm
- Max Net Lift: 14mm
- Pressure (Seat): 76lbs@34.8mm
- Outer Spring (OD/ID): 27.5mm / 20mm
⚠️CALIFORNIA WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
