Coil Spring Rubber InsertUsed to add progressive rate to your linear race spring, Four different durometers (60D 90D) available, Fits springs with 2. 5" to 3. 0" inside diameter.

Installation is accomplished by removing the factory carrier bearing mount and substituting with the UMI 6573 shim kit

These connecting rods are meticulously crafted to meet the same high-quality standards as our renowned Sportsmaster

Verify if your vehicle has (1) or (2) rear upper control arms

increase frontend rigidity

Reduce your risk of a blown header gasket and stop leaks before they happen

heat-treating process for unparalleled performance

Tech Tip: P/N 2602 includes ½” lower a-arm bolts while P/N 2603 uses 14mm

These lower A-arms are designed for use with coil-overs and do not have provision for the factory spring

BMRs unique K-member design features integrated frame stands that replace the factory cast iron frame stands

these arms are a great choice

Designed specifically for 1970-1981 GM F-body and 1978-1996 GM B-Body vehicles

Made from heavy-gauge steel with a powder-coated finish and top-notch hardware