Powerflex Polyurethane Bush kit for BMW E30 3 Series (1982 - 1991) Front Lower Wishbone Rear Bush Caster Offset - PFF5-303BLK - PFF5-303 is an eccentric bush for the M3. This can be fitted to all models throughout the range giving them increased castor to match the M3 setup. - Bush Size: - PRICE IS PER CAR KIT, NOT per bush. Powerflex usually price their bushes singly, but we have combined the QTY and price to keep it simple for you!