Tubular control arm kit improves traction, handling, and consistency.This kit from UMI Performance is designed for the 1971 1975 GM H Body and includes tubular rear lower control arms and tubular upper controls. It is a direct bolt on replacement aimed at reducing wheel hop, improving cornering, and enhancing track consistency for your classic H Body. Stock control arms can lead to traction loss and poor handling due to bushing deflection and weak stamped material. This kit, made from 1. 250 DOM steel tubing and