UMI Performance 78-96 GM B-Body Adjustable Upper Control Arms- Roto-Joint

The UMI Performance Roto-Joint adjustable rear upper control arms are built with 1/4" thick CNC laser cut mounting pads, ensuring a solid foundation for the suspension. These control arms are a smart upgrade for your GM B-Body, whether you're building a street machine, a pro-touring car, or just looking for improved performance. They help minimize suspension deflection, which means better handling, especially when you're carving corners or hitting the strip. Plus, they make it easier to tune your pinion angle and can significantly reduce that annoying wheel hop you sometimes get on hard launches.

What really sets these apart is the on-car adjustability. You can make changes to your suspension settings without having to remove the control arms, saving you time and hassle. The UMI-designed Roto-Joints themselves are a premium spherical joint that allows for smooth movement while keeping deflection to a minimum. They're paired with chromoly adjuster threads for extra strength and durability. The whole assembly is TIG and MIG welded for a strong, long-lasting build, and finished with a tough powder coat to resist the elements. These are designed as a direct bolt-in replacement for various GM rear end housings, fitting models like the Chevrolet Caprice, Buick Roadmaster, and Pontiac Bonneville from the late 70s through the mid-90s.

Installation is straightforward, typically taking about 1-2 hours with basic hand tools, making this a manageable upgrade for many DIYers. You'll notice improved launch characteristics and more responsive handling once they're on.