UMI's boxed lower control arms utilize our Roto-Joint technology for a bind free performance and quiet comfortable ride quality. The boxed control arms are fabricated from 0.120" wall thickness rectangular tubing, CNC machined drawn over mandrel bushing holders and MIG welded end caps to keep out unwanted road debris. Each control arm features the correct provisions for adding a stock or aftermarket rear sway bar, sway bar holes are reinforced with a 0.120" wall thickness steel sleeve that is TIG welded and sanded into place. The solid construction combined with the delrin lined Roto-Joints eliminate control arm flex and bushing deflection for improved traction and reduced wheel hop. The installed Roto-Joint is a pivot ball lined with a greaseable delrin race designed to offer 28 degrees of total unrestricted movement, more than adequate for a bind free, low friction operation. The Roto-Joint design improves performance over the factory rubber and aftermarket polyurethane bushings by allowing the suspension to articulate correctly, and provide precision handling. The installed UMI Roto-Joint allows rear end free movement when high handling, auto cross or road race is a concern while still being a 100% streetable setup. The installed delrin race, which lines the spherical ball, absorbs shock and road noise for a quiet and smooth operation on any street or track driven vehicle. This control arm set features polyurethane bushings on one end and UMI's swivel Roto-Joint on the other end. This set-up is designed for street performance and street enthusiast. The polyurethane bushing end is designed to be bolted to the vehicle chassis side while the Roto-Joint attaches to the rear end side. Since the polyurethane bushings are softer they are designed to absorb more road noise and shock before it enters the passenger compartment of the vehicle.

Fitment:
1964 Buick Skylark
1964 Chevrolet Chevelle
1964 Chevrolet El Camino
1964 Oldsmobile Cutlass
1964 Pontiac GTO
1965 Buick Skylark
1965 Chevrolet Chevelle
1965 Chevrolet El Camino
1965 Oldsmobile Cutlass
1965 Pontiac GTO
1966 Buick Skylark
1966 Chevrolet Chevelle
1966 Chevrolet El Camino
1966 Oldsmobile Cutlass
1966 Pontiac GTO
1967 Buick Skylark
1967 Chevrolet Chevelle
1967 Chevrolet El Camino
1967 Oldsmobile Cutlass
1967 Pontiac GTO
1968 Buick Skylark
1968 Chevrolet Chevelle
1968 Chevrolet El Camino
1968 Oldsmobile Cutlass
1968 Pontiac GTO
1969 Buick Skylark
1969 Chevrolet Chevelle
1969 Chevrolet El Camino
1969 Oldsmobile Cutlass
1969 Pontiac GTO
1970 Buick Skylark
1970 Chevrolet Chevelle
1970 Chevrolet El Camino
1970 Oldsmobile Cutlass
1970 Pontiac GTO
1971 Buick Skylark
1971 Chevrolet Chevelle
1971 Chevrolet El Camino
1971 Oldsmobile Cutlass
1971 Pontiac GTO
1972 Buick Skylark
1972 Chevrolet Chevelle
1972 Chevrolet El Camino
1972 Oldsmobile Cutlass
1972 Pontiac GTO