Powerflex Polyurethane Bush kit for Caterham 7 (DeDion With Watts Linkage) Small Upper Wishbone Front Bush - PF8-902 - Includes special bolt. This bush is suitable for Road and Black Series applications. - 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!