UMI Performance Rear Coil-Over Conversion Brackets (1978-1996 GM B-Body) (3623)
Convert your full-size GM chassis to a modern, high-performance coilover shock system with the UMI Performance Rear Coil-Over Conversion Brackets (3623). Engineered specifically for 1978-1996 GM B-Body vehicles—including the Chevrolet Impala SS, Caprice, Buick Roadmaster, and LeSabre—these conversion brackets allow you to easily adapt popular aftermarket racing coilovers to factory GM B-Body rear axle housings and upper shock mounts without requiring welding.
Constructed 100% in the USA from precision laser-cut heavy-duty US steel, these brackets are precision jig-welded to guarantee an exact fit and maximum structural integrity. The system features strong double-shear upper and lower mounting brackets designed to accommodate standard racing coilovers with 1/2" mounting bolts and up to 1.250" wide spherical bearing rod ends. Installation is straight forward: the lower brackets bolt directly to the axle housing, while the upper mounts require simple drilling of two holes using a standard 3/8" drill bit. Arrives in a durable powder coat finish to protect against rust and road debris.
Features
- Converts factory rear spring and shock layout to a full aftermarket coilover suspension system
- Double-shear upper and lower mounting design provides maximum strength and load distribution
- No welding required; upper mounts install easily by drilling with a standard 3/8" drill bit
- Designed to fit most popular racing coilovers with 1/2" mounting hardware and 1.250" bearing widths
- Precision laser-cut US steel construction, jig-welded for accurate alignment and fitment
- Durable powder-coated finish protects against corrosion, rust, and road grime
- 100% designed, tested, and manufactured in the USA
Specifications
- SKU: 3623
- Manufacturer: UMI Performance
- Country of Origin: USA
- Material: Precision Laser-Cut Heavy-Duty US Steel
- Mount Style: Double Shear Upper and Lower Brackets
- Coilover Compatibility: Fits 1/2" Mounting Bolts and up to 1.250" Wide Bearings
- Finish: Powder Coat
- Weight: N/A
- Dimensions: N/A
- Unit of Measure: Kit (Includes Upper & Lower Bracket Sets)
- Welding Required: No
Fitment Notes
- Position: Rear Upper & Lower Axle/Chassis Shock Mounts.
- Fits 1978-1996 GM B-Body platforms (Chevrolet Impala SS, Caprice, Buick Roadmaster, LeSabre, Pontiac Bonneville, Catalina).
- Compatible with factory GM B-Body rear axle housings.
- Upper bracket installation requires drilling two holes using a standard 3/8" drill bit.
- Coilovers and springs sold separately.
Fitment
1991 Buick Roadmaster
1992 Buick Roadmaster
1993 Buick Roadmaster
1994 Buick Roadmaster
1995 Buick Roadmaster
1996 Buick Roadmaster
1978 Buick LeSabre
1979 Buick LeSabre
1980 Buick LeSabre
1981 Buick LeSabre
1982 Buick LeSabre
1983 Buick LeSabre
1984 Buick LeSabre
1985 Buick LeSabre
1978 Chevrolet Caprice
1979 Chevrolet Caprice
1980 Chevrolet Caprice
1981 Chevrolet Caprice
1982 Chevrolet Caprice
1983 Chevrolet Caprice
1984 Chevrolet Caprice
1985 Chevrolet Caprice
1986 Chevrolet Caprice
1987 Chevrolet Caprice
1988 Chevrolet Caprice
1989 Chevrolet Caprice
1990 Chevrolet Caprice
1991 Chevrolet Caprice
1992 Chevrolet Caprice
1993 Chevrolet Caprice
1994 Chevrolet Caprice
1995 Chevrolet Caprice
1996 Chevrolet Caprice
1994 Chevrolet Impala SS
1995 Chevrolet Impala SS
1996 Chevrolet Impala SS
1977 Pontiac Bonneville
1978 Pontiac Bonneville
1979 Pontiac Bonneville
1980 Pontiac Bonneville
1981 Pontiac Bonneville
1977 Pontiac Catalina
1978 Pontiac Catalina
1979 Pontiac Catalina
1980 Pontiac Catalina
1981 Pontiac Catalina
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
