Ridetech 11284499 65-70 IMPALA REAR LOWER STRONGARMSRidetech 11284499 65 70 IMPALA REAR LOWER STRONGARMS These rear StrongArms are a direct replacement for the factory lower trailing arm on 1965 1970 Chevrolet B Body Car (Bel Air, Biscayne, Impala & Caprice). They are specifically designed for use with the Ridetech CoolRide system (air springs and brackets) and are constructed of 1. 5 x . 188 DOM tubing, powder coated satin black. Suspension Location Rear StrongArm Spring Style Air CoolRide Suspension