UMI polyurethane rear end bushings: stronger, better ride, USA-made. 1999 Pontiac Firebird 120" DOM Mild Steel Tubing

120" DOM Mild Steel Tubing with TIG welding

PA shop in the USA

percent Viscosity Loss

3500 C200FE front differentials

These direct bolt-on control arms minimize wheel hop

UMI polyurethane rear end bushings: stronger, better ride, USA-made. 1999 Pontiac Firebird 120" DOM Mild Steel TubingUMI offers high durometer polyurethane bushings to replace the factory rubber rear end housing bushings. These bushings are designed to improve ride quality and performance by replacing the worn out and hardened factory bushings. The kit includes two bushings and two washers to prevent lateral movement. Made in the USA, these bushings are a great upgrade for both street and track vehicles.