UMI Performance 70-81 GM F-Body Tubular Upper & Lower A-arm Kit

UMI’s 2nd Generation F-Body a-arms are perfect for the F-Body enthusiast seeking to improve the performance and appearance of their front suspension. This kit features caster relocation of both the upper and lower ball joints to enhance steering feel and improve high speed stability. As designed, the caster range is 5-7 degrees. The spindle pin location remains unchanged so fender clearance is like stock. The upper a-arms include CrMo offset cross shafts to reduce the amount of shims required when setting camber. A pancake style polyurethane bump stop and high quality ball joint is included. The heavy duty lower spring bucket accepts factory and aftermarket coil springs as well as the popular hybrid coilover units. Laser cut UMI reinforcement plates add a great appearance and excellent strength. UMI’s double shear sway bar end links are included and work nicely with UMI P/N 4035 sway bar and also most aftermarket stock eyelet type sway bars. Available in UMI red or gloss black powder coat. 100% designed, manufactured and raced with pride in Philipsburg, PA - USA.

Upgrade the front suspension of your 1970-1981 GM F-Body with the UMI Performance 265153-R second-generation tubular upper and lower A-arm kit. Designed for enthusiasts seeking improved handling, steering response, and suspension appearance, this complete kit provides caster relocation at both the upper and lower ball joints. The revised geometry delivers an adjustable caster range of approximately 5 to 7 degrees, helping improve steering feel and high-speed stability while retaining the factory spindle pin location for stock-like fender clearance.
The tubular upper A-arms include chrome-moly offset cross shafts that reduce the shims needed during camber adjustment. A pancake-style polyurethane bump stop and high-quality ball joint are included for dependable suspension control. The heavy-duty lower spring bucket accepts factory and aftermarket coil springs, along with popular hybrid coilover assemblies. Laser-cut UMI reinforcement plates add structural strength and a clean, performance-oriented appearance.
Double-shear sway bar end links are included and are compatible with the UMI Performance P/N 4035 sway bar as well as most aftermarket sway bars using stock-style eyelets. Finished in red powder coat, the UMI Performance 265153-R kit is designed, manufactured, and raced in Philipsburg, Pennsylvania. This suspension package fits 1977-1981 Pontiac Firebird applications and is engineered for a durable, performance-focused installation.

Features:

• Application: Fits 1977-1981 Pontiac Firebird and compatible GM F-Body applications

• Suspension design: Tubular upper and lower A-arms improve front-end performance and appearance

• Caster adjustment: Relocated upper and lower ball joints provide approximately 5 to 7 degrees of caster range

• Steering stability: Revised geometry improves steering feel and high-speed stability

• Clearance: Factory spindle pin location helps maintain stock-like fender clearance

• Upper A-arms: Chrome-moly offset cross shafts reduce the shims required for camber adjustment

• Bump stop: Includes a pancake-style polyurethane bump stop

• Spring compatibility: Heavy-duty lower spring bucket accepts factory, aftermarket, and hybrid coilover springs

• Reinforcement: Laser-cut reinforcement plates provide added strength and a finished appearance

• Sway bar compatibility: Includes double-shear end links compatible with UMI Performance P/N 4035 and most stock-eyelet aftermarket sway bars

• Finish: Red powder-coat finish

• Manufacturing: Designed, manufactured, and raced in Philipsburg, Pennsylvania

Fitment:
Buick LeSabre Base 1978
Buick LeSabre Base 1979
Buick LeSabre Base 1980
Buick LeSabre Base 1981
Buick LeSabre Collector's Edition 1985
Buick LeSabre Custom 1978
Buick LeSabre Custom 1982
Buick LeSabre Custom 1983
Buick LeSabre Custom 1984
Buick LeSabre Custom 1985
Buick LeSabre Estate Wagon 1985
Buick LeSabre Limited 1979
Buick LeSabre Limited 1980
Buick LeSabre Limited 1981
Buick LeSabre Limited 1982
Buick LeSabre Limited 1983
Buick LeSabre Limited 1984
Buick LeSabre Limited 1985
Buick LeSabre Limited Edition F/E 1982
Buick LeSabre Sport 1978
Buick LeSabre Sport 1979
Buick LeSabre Sport 1980
Buick LeSabre Sport 1981
Buick Roadmaster Base 1992
Buick Roadmaster Base 1993
Buick Roadmaster Base 1994
Buick Roadmaster Base 1995
Buick Roadmaster Collector's Edition 1996
Buick Roadmaster Estate Wagon 1991
Buick Roadmaster Estate Wagon 1992
Buick Roadmaster Estate Wagon 1993
Buick Roadmaster Estate Wagon 1994
Buick Roadmaster Estate Wagon 1995
Buick Roadmaster Estate Wagon Collector's Edition 1996
Buick Roadmaster Limited 1992
Buick Roadmaster Limited 1993
Buick Roadmaster Limited 1994
Buick Roadmaster Limited 1995
Buick Roadmaster Limited Collector's Edition 1996
Chevrolet Camaro Base 1970
Chevrolet Camaro Base 1971
Chevrolet Camaro Base 1972
Chevrolet Camaro Base 1973
Chevrolet Camaro Base 1974
Chevrolet Camaro Base 1975
Chevrolet Camaro Base 1976
Chevrolet Camaro Base 1977
Chevrolet Camaro Base 1978
Chevrolet Camaro Base 1979
Chevrolet Camaro Base 1980
Chevrolet Camaro Berlinetta 1979
Chevrolet Camaro Berlinetta 1980
Chevrolet Camaro Berlinetta 1981
Chevrolet Camaro LT 1973
Chevrolet Camaro LT 1974
Chevrolet Camaro LT 1975
Chevrolet Camaro LT 1976
Chevrolet Camaro LT 1977
Chevrolet Camaro LT 1978
Chevrolet Camaro LT Rally Sport 1976
Chevrolet Camaro LT Rally Sport 1977
Chevrolet Camaro LT Rally Sport 1978
Chevrolet Camaro Rally Sport 1976
Chevrolet Camaro Rally Sport 1977
Chevrolet Camaro Rally Sport 1978
Chevrolet Camaro Rally Sport 1979
Chevrolet Camaro Rally Sport 1980
Chevrolet Camaro RS 1970
Chevrolet Camaro RS 1971
Chevrolet Camaro RS 1972
Chevrolet Camaro RS 1973
Chevrolet Camaro RS 1975
Chevrolet Camaro Sport 1981
Chevrolet Camaro SS 1970
Chevrolet Camaro SS 1971
Chevrolet Camaro SS 1972
Chevrolet Camaro Z28 1970
Chevrolet Camaro Z28 1971
Chevrolet Camaro Z28 1972
Chevrolet Camaro Z28 1973
Chevrolet Camaro Z28 1974
Chevrolet Camaro Z28 1977
Chevrolet Camaro Z28 1978
Chevrolet Camaro Z28 1979
Chevrolet Camaro Z28 1980
Chevrolet Camaro Z28 1981
Chevrolet Impala SS 1994
Chevrolet Impala SS 1995
Chevrolet Impala SS 1996
Chevrolet Nova Base 1975
Chevrolet Nova Base 1976
Chevrolet Nova Base 1977
Chevrolet Nova Base 1978
Chevrolet Nova Base 1979
Chevrolet Nova Concours 1976
Chevrolet Nova Concours 1977
Chevrolet Nova Custom 1975
Chevrolet Nova Custom 1978
Chevrolet Nova Custom 1979
Chevrolet Nova LN 1975
Chevrolet Nova Police 1975
Chevrolet Nova Police 1976
Chevrolet Nova Police 1977
Chevrolet Nova Police 1978
Chevrolet Nova Rally 1977
Chevrolet Nova Rally 1978
Chevrolet Nova Rally 1979
Chevrolet Nova SS 1976
Pontiac Bonneville Base 1977
Pontiac Bonneville Base 1978
Pontiac Bonneville Base 1979
Pontiac Bonneville Base 1980
Pontiac Bonneville Base 1981
Pontiac Bonneville Brougham 1977
Pontiac Bonneville Brougham 1978
Pontiac Bonneville Brougham 1979
Pontiac Bonneville Brougham 1980
Pontiac Bonneville Brougham 1981
Pontiac Bonneville Safari 1978
Pontiac Bonneville Safari 1979
Pontiac Bonneville Safari 1980
Pontiac Bonneville Safari 1981
Pontiac Catalina Base 1977
Pontiac Catalina Base 1978
Pontiac Catalina Base 1979
Pontiac Catalina Base 1980
Pontiac Catalina Base 1981
Pontiac Catalina Safari 1977
Pontiac Catalina Safari 1978
Pontiac Catalina Safari 1979
Pontiac Catalina Safari 1980
Pontiac Catalina Safari 1981
Pontiac Firebird Base 1970
Pontiac Firebird Base 1971
Pontiac Firebird Base 1972
Pontiac Firebird Base 1973
Pontiac Firebird Base 1974
Pontiac Firebird Base 1975
Pontiac Firebird Base 1976
Pontiac Firebird Base 1977
Pontiac Firebird Base 1978
Pontiac Firebird Base 1979
Pontiac Firebird Base 1980
Pontiac Firebird Base 1981
Pontiac Firebird Esprit 1970
Pontiac Firebird Esprit 1971
Pontiac Firebird Esprit 1972
Pontiac Firebird Esprit 1973
Pontiac Firebird Esprit 1974
Pontiac Firebird Esprit 1975
Pontiac Firebird Esprit 1976
Pontiac Firebird Esprit 1977
Pontiac Firebird Esprit 1978
Pontiac Firebird Esprit 1979
Pontiac Firebird Esprit 1980
Pontiac Firebird Esprit 1981
Pontiac Firebird Formula 1970
Pontiac Firebird Formula 1971
Pontiac Firebird Formula 1972
Pontiac Firebird Formula 1973
Pontiac Firebird Formula 1974
Pontiac Firebird Formula 1975
Pontiac Firebird Formula 1976
Pontiac Firebird Formula 1977
Pontiac Firebird Formula 1978
Pontiac Firebird Formula 1979
Pontiac Firebird Formula 1980
Pontiac Firebird Formula 1981
Pontiac Firebird Trans Am 1970
Pontiac Firebird Trans Am 1971
Pontiac Firebird Trans Am 1972
Pontiac Firebird Trans Am 1973
Pontiac Firebird Trans Am 1974
Pontiac Firebird Trans Am 1975
Pontiac Firebird Trans Am 1976
Pontiac Firebird Trans Am 1977
Pontiac Firebird Trans Am 1978
Pontiac Firebird Trans Am 1979
Pontiac Firebird Trans Am 1980
Pontiac Firebird Trans Am 1981