One of the easiest upgrades you can make to your braking system to make a real difference is a Brass Caliper Bushing Kit. These are very easy to install, and prevent your calipers from flexing under the loads of strenuous braking.

Machined brass bushings replace the rubber bushings in the caliper where the floating part slides. Includes new Caliper pins to bolt the two halves together.

Fits virtually all BMW and Mini car models. Does not work on E30 cars with Girling Calipers.