Powerflex Black Series PFF5-101X2 (ES#2651368) is a polyurethane bushing set for the rear section of the front control arm (wishbone), replacing the factory rubber bushing at that pivot point. The stiffer polyurethane bushing sharpens turn-in and reduces front-end wander that develops as the original rubber bushing softens with age.

Fitment: MINI Cooper and Cooper S, chassis R50 (2002-2008), R53 (2002-2006), and R52 convertible (2005-2008), across all engine options — not the BMW E36/E36-7 3 Series/Z3 chassis on the original listing.