This is a pair of RPM Blue Front Upper and Lower Right A-Arms for the TRA Revo. Constructed of composite nylon Angled leading and trailing edges eliminate dirt build-up No excessive A-arm endplay for more accurate caster and toe angle settings Large shock rod mounting areas for improved rigidity One Front Upper Right and one Front Lower Right A-Arm and one 16mm shock mounting screw Installing on vehicle and attaching shock mount rod Checking camber angles with Camber Gauge, RPMC7099 UPPER LOWER Length: 4.9" (124mm) 5.9" (149mm) Width: 2.5" (63mm) 2.8" (72mm) For Upper and Lower Left A-Arms order RPMC8226. jxs 2/24/05 ir/jxs &