PFF5-2301 is made using our Black 95A durometer material and supplied with outer shells to increase bush stiffnes, controlling longitudinal wheel movement under braking and cornering, and improving longer-term durability. It performs as the non-adjustable bush and allows for +/- 0.75   of caster adjustment, improving turn-in and steering feel, and correcting any steering pull. Fits AWD and RWD models.