Upper Rear Axle Control Arm Set, Tubular, Adjustable, Red powder coated w/ Roto-Joint bushings, UMI

Upper Rear Axle Control Arm Set, Tubular, Adjustable, Red powder coated w/ Roto-Joint bushings, UMI

UMIs Roto-Joint adjustable rear upper control arms are a bulletproof addition to your street or pro-touring car. UMIs Roto-Joint upper control arms are suitable for street, strip or corner carving. The premium UMI built spherical joint drastically minimizes suspension deflection for a crisp handling setup, easy pinion angle tuning and less wheel hop. These on car adjustable upper control arms adjust easily while staying bolted to the car and are designed to handle virtually any application. The Roto-Joints combined with UMIs in house designed and machined chromoly adjuster equal ultimate strength and performance. These heavy duty arms feature thick CNC laser cut mounting pads and a mix of TIG and MIG welding. These simple bolt in replacements install in 1-2 hours and are designed to work on all rear end housings. Launch harder and turn faster with UMIs ultimate arms!FeaturesOn car adjustment using UMI designed & manufactured chromoly adjusterUMI designed Roto-JointsChromoly threaded adapters for improved thread strengthCNC laser cut upper mounting padsDurable and long lasting powder coat finishMore about Roto-Joint Technology.. UMIs Roto-Joint, short for Rotational Joint, allows 28 degrees of total rotation and unrestricted movement throughout the vehicles suspension. The Roto-Joint is designed to work like a spherical rod end while maintaining streetable qualities of a softer bushing. The Roto-Joint is designed to articulate and prevent suspension bind, and since the installed delrin race does not deflect like softer bushings, there is an improvement in traction and a significant reduction in wheel hop. The construction of the Roto-Joint features a 4140 chrome moly, hard chrome plated spherical ball which rotates in a delrin race. The 4140 chrome moly material and hard chrome plating are designed for extensive wear resistance against hard driving and accumulated miles. The spherical ball rotates in the CNC machined delrin bushing, which is contoured for the spherical ball to allow unrestricted movement as the ball rotates. Delrin is the bushing material of choice due to its high resistance against wear, great tensile strength, and ability to maintain its physical properties. The housing of the Roto-Joint features 4140 chrome moly threads, and a CNC machined bushing holder TIG welded together for the utmost in strength and durability. The UMI Roto-Joint is adjustable and 100% rebuildable. This means as the delrin race wears the adjuster ring can be tightened using the optional spanner wrench to apply tension to the ball. If the delrin race would ever wear completely it can be replaced easily.

Installation Note:

Requires no drilling and installs with OEM hardware.

Made to Order:

Ships from manufacturer, Allow a minimum of 1-8 weeks for delivery. Currently however, some manufacturers are requiring much longer lead times.

Chevrolet Chevelle / El Camino / Malibu Years:

1964 (64), 1965 (65), 1966 (66), 1967 (67)

Pontiac GTO / Lemans / Tempest Years:

1964 (64), 1965 (65), 1966 (66), 1967 (67)

Oldsmobile Cutlass Years:

1964 (64), 1965 (65), 1966 (66), 1967 (67)

Buick Skylark Years:

1964 (64), 1965 (65), 1966 (66), 1967 (67)