UMI 64-72 GM A-Body Coil Over Conversion Brackets Kit -2in to -3in Ride Height - 225lb Spring Rate

UMI Performance is known for making well-built suspension components for classic American muscle cars. This rear coilover conversion bracket kit is designed for 1964-1972 GM A-Body vehicles, like the Chevrolet Chevelle, Buick Skylark, and Pontiac GTO. It allows you to upgrade your rear suspension to a modern coilover setup, giving you full control over ride height, spring rate, and damping. This means you can dial in your car's handling for everything from daily driving to track days.

This kit features a reinforced upper mount that's built to handle a 2-1/2 inch racing coilover with a double-shear configuration, ensuring a solid connection. The lower brackets were designed using FEA analysis and bolt directly onto existing control arm mounts, simplifying installation. A notable feature is the 2-hole trailing arm adjustment, which lets you fine-tune the instant center location for precise calibration of your car's suspension geometry. All materials are sourced from the USA, and the kit is manufactured and tested in Philipsburg, Pennsylvania.

For the best results, UMI recommends installing the brackets first and then measuring center-to-center at ride height to select the correct shock absorbers. While the brackets are designed as a bolt-in solution for Quick Performance rear ends, welding is recommended for drag racing applications to ensure maximum strength. This kit is a comprehensive way to modernize your classic GM's rear suspension.