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UMI Performance 70-81 GM F-Body Upper A-arms Front Adjustable
UMI Performance
Please be advised that no returns, cancellations, or refunds allowed on Special Orders once it has been placed on order regardless of the circumstances.
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Please be advised that no returns, cancellations, or refunds allowed on Special Orders once it has been placed on order regardless of the circumstances.
Please be advised that no returns, cancellations, or refunds allowed on Special Orders once it has been placed on order regardless of the circumstances.
UMI introduces the 2nd Gen F-body & 78-96 B-Body adjustable upper a-arms, offering a perfect balance of performance and street versatility. These a-arms provide enhanced steering precision with added caster, along with easy adjustments for caster and camber. Crafted from robust tubular construction with a 4140 CrMo cross shaft, they offer unwavering strength on both the track and winding roads. Available in UMI red or gloss black powder coat finishes, these a-arms are made in the USA with unbeatable quality assurance.
- Shorter design reduces need for shims with racing alignment settings; camber range from -0.5° to -2.5°
- Constructed with 1.250” USA Made DOM steel and 4140 threaded adapters for durability
- Enhances steering feel with 5 to 6 degrees of additional caster, reducing wandering
- Rod ends minimize stiction for responsive drag race reaction and consistent times
- Pair with UMI lower A-arms for 8 to 10 degrees of positive caster
- Includes thick laser-cut ball joint plate and premium ball joint
- Direct bolt-in for 1970-1981 GM F-body & 1978-1996 GM B-Body
- Features 4140 CrMo cross shaft for added strength
- 100% manufactured in Philipsburg, PA, USA

