UMI Performance 2nd generation F-body tubular upper and lower A-arms upgrade the front suspension of 1970 to 1981 Chevrolet Camaro and Pontiac Firebird cars for improved performance and appearance. The kit relocates both the upper and lower ball joints to add caster for better steering feel and high speed stability, with a designed caster range of 5 to 7 degrees. The spindle pin location stays in the stock position so fender clearance remains like factory. The upper A-arms use chromoly offset cross shafts to reduce the number of shims needed when setting camber, and include a pancake style polyurethane bump stop and a high quality ball joint. The heavy duty lower spring bucket accepts factory and aftermarket coil springs as well as popular hybrid coilover units. Laser cut UMI reinforcement plates add strength and a clean appearance. UMI double shear sway bar end links are included and work with the UMI 4035 sway bar and most aftermarket stock eyelet style sway bars. This kit is finished in UMI red powder coat and is also offered in gloss black. These A-arms are designed, manufactured, and raced in the USA in Philipsburg, Pennsylvania.
Specifications:
- Type: Front tubular upper and lower A-arm kit
- Ball joint relocation: upper and lower, 5 to 7 degree caster range
- Upper cross shafts: chromoly, offset
- Bushings: polyurethane and aluminum
- Includes: polyurethane bump stops, ball joints, double shear sway bar end links, and hardware
- Spring bucket: heavy duty, accepts factory, aftermarket, and hybrid coilover springs
- Material: steel
- Finish: UMI red powder coat
- Sold as: Kit
- Made in the USA
- Part number: 265153-R
Vehicle Applications:
- 1970 Chevrolet Camaro
- 1971 Chevrolet Camaro
- 1972 Chevrolet Camaro
- 1973 Chevrolet Camaro
- 1974 Chevrolet Camaro
- 1975 Chevrolet Camaro
- 1976 Chevrolet Camaro
- 1977 Chevrolet Camaro
- 1978 Chevrolet Camaro
- 1979 Chevrolet Camaro
- 1980 Chevrolet Camaro
- 1981 Chevrolet Camaro
- 1970 Pontiac Firebird
- 1971 Pontiac Firebird
- 1972 Pontiac Firebird
- 1973 Pontiac Firebird
- 1974 Pontiac Firebird
- 1975 Pontiac Firebird
- 1976 Pontiac Firebird
- 1977 Pontiac Firebird
- 1978 Pontiac Firebird
- 1979 Pontiac Firebird
- 1980 Pontiac Firebird
- 1981 Pontiac Firebird
FAQ
What vehicles does this A-arm kit fit?
It fits 1970 to 1981 GM second generation F-body cars, including the Chevrolet Camaro and Pontiac Firebird.
How much caster does this kit add?
The upper and lower ball joints are relocated to provide a designed caster range of 5 to 7 degrees, while the spindle pin location stays in the stock position so fender clearance remains like factory.
What is included in the kit?
The kit includes tubular upper and lower A-arms with polyurethane and aluminum bushings, polyurethane bump stops, ball joints, UMI double shear sway bar end links, and mounting hardware.
Will these work with my existing springs?
The heavy duty lower spring buckets accept factory and aftermarket coil springs as well as popular hybrid coilover units.
What is the difference between the red and black versions?
The two are identical except for powder coat color. This is the red version (265153-R) and a gloss black version (265153-B) is also offered.

