The Mini was a great handler in standard form. When raced, Minis need as low a center of gravity as possible, but lowering a Mini changes the roll center as well, losing the built-in camber gain. The lower control arm is closer to horizontal at standard ride height, and if you imagine an arc at center there is no movement in and out. Race cars typically run 1.5-2 degrees of camber to get that camber back. As the cars lean while cornering the tires are near vertical, but on braking and accelerating they run on the inside edge. To remedy this situation, lower the outer end of the control arm control arm using these ball joint extenders, which effectively put it back to its stock location and restores the camber gain as well as correcting the roll center. Less initial negative camber will be required, with the same cornering power and improved tire wear.

These were developed for the Mini Miglia cars in the UK, and we all know how well they corner. Sold by the pair, and fitted to the lower ball joints.