QA1 Street Performance control arms are a direct upgrade for vehicles used for cruising and longer drives. Polyurethane bushings isolate road noise for a smoother ride while staying firm enough for good handling, and the integrated ball joint is stronger than the factory unit for long service life. High strength tubing and billet aluminum cross shafts make the arms light yet durable, and the double shear lower mounting is configured for QA1 Pro Coil systems. The arms are robotically welded and powder coated, and when used together they add roughly 3 to 4 degrees of caster and 0.5 to 1 degree of negative camber.
Specifications:
- Series: QA1 Street Performance
- Position: lower control arms
- Polyurethane bushings
- Integrated ball joint, stronger than factory
- High strength tubing with billet aluminum cross shafts
- Double shear lower mounting configured for QA1 Pro Coil systems
- Robotically welded and powder coated
- Adds about 3 to 4 degrees caster and 0.5 to 1 degree negative camber when used together
- Part number: 52721
Vehicle Applications:
- 1971 Chevrolet Caprice
- 1972 Chevrolet Caprice
- 1973 Chevrolet Caprice
- 1974 Chevrolet Caprice
- 1975 Chevrolet Caprice
- 1976 Chevrolet Caprice
- 1971 Chevrolet Impala
- 1972 Chevrolet Impala
- 1973 Chevrolet Impala
- 1974 Chevrolet Impala
- 1975 Chevrolet Impala
- 1976 Chevrolet Impala
FAQ
What type of control arm is this?
It is a QA1 Street Performance lower control arm set for GM B-Body vehicles, aimed at cruising and daily driving with improved handling.
What bushings and ball joint are used?
The arms use polyurethane bushings to isolate road noise and an integrated ball joint that is stronger than the factory unit.
How much alignment change do these arms add?
When upper and lower arms are used together they add about 3 to 4 degrees of caster and 0.5 to 1 degree of negative camber. Used on their own they add roughly half of those figures.
Are these arms set up for coil-overs?
Yes. The double shear lower mounting is configured for QA1 Pro Coil systems.
