Supertech Performance Valve Spring Kit - R52/R53 MINI (S & JCW) (NLA)

This valve spring is for performance built engines that demand it.

Note: Does not mount to OEM Retainers. For the Full kit - see part number SPRK-TS1015-MC

Dual Valve Spring for Triple Groove Valves.

Set of 16 springs.

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

Note: Always confirm part number fitment to your specific vehicle.