It has been said that one of the biggest improvements that can be made to a Mini is to replace the rubber cone springs. When that statement was made it referred to new rubber cones… There is now a new USA/Japan standard in Mini springing: coil springs! This direct-replacement kit includes everything to replace the rubber cones with springs. The highest quality progressive winding is used to insure that the springs will not sag after many years of use, unlike the rubber cones. Available in three spring rates:
C-SRP100 is soft (Blue),
C-SRP200 is firm (Red), and
C-SRP250 competition spec. These are not recommended for road use and suspension should be suitably set up as these springs can move in "situ" especially when the car is lowered and driven over rough road. The safer way of converting to coil springs is the spax set up RSX519/520. Mini Spares has been keeping this part since 1999.