UMI Performance rear coil-over conversion brackets add ride height and damping adjustment to the 1978-1996 GM B-Body platform. These bolt-in brackets require no welding. When used with coilovers, they allow ride height selection along with compression and rebound damping adjustment. The heavy duty, laser cut steel brackets are jig welded to ensure a precise fit on factory GM B-body axles. They are made in the USA.
Specifications:
- Bolt-in installation, no welding required
- Heavy duty laser cut steel
- Jig welded for a precise fit on factory GM B-body axles
- Enables ride height selection when used with coilovers
- Allows compression and rebound damping adjustment
- Made in the USA
- Part number: 3623
Vehicle Applications:
- 1978 Buick LeSabre
- 1979 Buick LeSabre
- 1980 Buick LeSabre
- 1981 Buick LeSabre
- 1982 Buick LeSabre
- 1983 Buick LeSabre
- 1984 Buick LeSabre
- 1985 Buick LeSabre
- 1991 Buick Roadmaster
- 1992 Buick Roadmaster
- 1993 Buick Roadmaster
- 1994 Buick Roadmaster
- 1995 Buick Roadmaster
- 1996 Buick Roadmaster
- 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
- 1995 Chevrolet Impala
- 1996 Chevrolet Impala
- 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
FAQ
What vehicles do these brackets fit?
They fit the 1978 to 1996 GM B-Body platform, including the Buick LeSabre and Roadmaster, Chevrolet Caprice and Impala SS, and Pontiac Bonneville and Catalina.
Is welding required to install these brackets?
No. These are bolt-in brackets and require no welding. They are jig welded for a precise fit on factory GM B-body axles.
What do these brackets do?
Used with coilovers, they add ride height selection along with compression and rebound damping adjustment to the rear of the vehicle.
Do these brackets include coilovers?
These are the rear coil-over conversion brackets. They are used together with coilovers to enable ride height and damping adjustment.

