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.
Rear Anti-Roll Bar Mounting Bush 14mm from Powerflex.
Check rear roll bar size, especially Sierra XR4i.
This item is reference number 7 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.