UMI Performance 78-96 GM B-Body Boxed Lower Control Arms- Poly/Roto-Joint

UMI Performance is known for making well-built suspension components that improve the performance and handling of classic American cars. These boxed lower control arms are a prime example, designed to give your 1978-1996 GM B-Body vehicle a noticeable upgrade in how it puts power down and handles corners. They replace your stock arms with a much stronger, bind-free design that helps reduce wheel hop and makes for a more comfortable ride, even when you're pushing the car a bit.

What sets these apart is the Roto-Joint technology. Unlike standard bushings that can bind up as the suspension moves, the Roto-Joints offer a full 28 degrees of rotation. This means your suspension can articulate freely, which is crucial for maintaining tire contact with the road, especially under acceleration. They’re built from thick 3" x 1-1/2" rectangular steel tubing with 0.120" wall thickness, and feature CNC machined mounts and MIG and TIG welding for serious strength. The sway bar mounts are also reinforced. Inside the Roto-Joints, you'll find a delrin liner that absorbs shock and road noise, contributing to a quieter ride, while the 4140 chrome moly ball ensures durability and wear resistance. These arms come with greaseable polyurethane bushings on one end and the Roto-Joint on the other, shipped fully assembled and ready to bolt on using your OEM hardware.

This set is designed for street performance applications and is built to last, with adjustable and rebuildable Roto-Joints for long-term use. A spanner wrench is included to help with any adjustments or maintenance you might need down the road.