Caterham 7 (DeDion with Watts Linkage) 7 Imperial Chassis with DeDion & Watts Linkage (1973-2006) Watts Linkage Rear Bush 1/2" Bore - PF8-901 This bush is suitable for Road and Black Series applications. Cut-away image of PF8-901 low friction bush. Shows polyurethane bush, low friction bearing and stainless steel sleeve. - NOTE: Price is for CAR KIT, NOT per bush… Powerflex price their bushes individually, but we have combined the quantities to make it simple!