For some bushes, Powerflex offer a version in their Black Series. Powerflex Black Series bushes are manufactured using a Black 95 Shore A compound to provide maximum control of chassis geometry. They are designed for the track, ready to race and are engineered to be the best.
Front Lower Wishbone Rear Bush from Powerflex.
Concentric Bush, use PFF5-303 for M3 or if you require increased caster angle.
This item is reference number 1 in the diagram below. Refer to the diagram image to see where in the vehicle the product is used.
Powerflex are proud to offer a Lifetime Warranty on the entire range of products they manufacture. They will replace any Powerflex product that any customer in the world is unhappy with for any reason.