CUSCO 692 927 AB Rear member bushes collar (rear) for SUBARU Impreza WRX (GRB) ymm_41 You will also note that

You will also note that ARP offers specially undercut studs for several engines

1987-1990 Jeep XJ Wagoneer - 4

TOYOTA Sprinter (AE110) 1995-

Mazda: BP4W15200A

750 rpm have been recorded when tested on the Akrapovic dyno against a Cupra Formentor VZ5 with a standard stock exhaust

CUSCO 692 927 AB Rear member bushes collar (rear) for SUBARU Impreza WRX (GRB) ymm_41 You will also note thatThe aluminum collar reduces rubber bush deflection. It suppresses alignment changes and improves control performance and traction performance. Pinch the rear sub member bushes in four places up and down and loosen one side at a time without completely separating the members.