# UMI Performance 78-96 GM B-Body Adjustable Upper Control Arms- Ultimate Arms

Adjustability is crucial when it comes to tuning your street car's suspension. Our Ultimate "on-car" adjustable upper control arms for the rear of your GM vehicle have been meticulously designed with the best materials and components available. We have replaced weak areas with aircraft quality 4140 Chrome Moly steel and utilized TIG welded construction for maximum durability. These control arms feature high quality QA1 spherical rod ends for a smooth and quiet operation. The Teflon lined rod ends prevent metal to metal contact, eliminating unwanted noise. The on-car adjustability of our Ultimate Arms makes it easy to make pinion angle adjustments, whether in the garage or at the track. With UMI's unique Chrome Moly on-car adjuster, you can quickly lengthen or shorten the control arm length with just two jam nuts. Pinion angle adjustments are essential for improving track 60-foot times, increasing traction, and reducing wheel hop. The bind-free operation of our rod ends makes them a great upgrade for both track and auto cross driven cars. Trust only the best-QA1 for long lasting performance.

-   High strength 4140 Chrome Moly heat treated 1.000" solid adjuster
-   CNC machined 0.250" mild steel upper control arm mounting points
-   Alloy steel, heat treated, hard chrome plated rod ends
-   Made from aircraft quality 4140 Chrome Moly steel
-   Supplied with high quality QA1 spherical rod ends
-   Ultimate "on car" adjustable upper control arms
-   Teflon/Kevlar self lubricating race in rod ends
-   Pinion angle adjustments for track performance
-   Suitable for track and auto cross driven cars
-   On-car adjustability for ease of adjustment
-   Bind free operation for smooth performance
-   4140 Chrome Moly tube adaptors
-   TIG welded construction

This Part Fits:

Year

Make

Model

Submodel

1978-1981

Buick

LeSabre

Base

1985

Buick

LeSabre

Collector's Edition

1978,1982-1985

Buick

LeSabre

Custom

1985

Buick

LeSabre

Estate Wagon

1979-1985

Buick

LeSabre

Limited

1982

Buick

LeSabre

Limited Edition F/E

1978-1981

Buick

LeSabre

Sport

1992-1995

Buick

Roadmaster

Base

1996

Buick

Roadmaster

Collector's Edition

1991-1995

Buick

Roadmaster

Estate Wagon

1996

Buick

Roadmaster

Estate Wagon Collector's Edition

1992-1995

Buick

Roadmaster

Limited

1996

Buick

Roadmaster

Limited Collector's Edition

1986-1992

Chevrolet

Caprice

Base

1978-1996

Chevrolet

Caprice

Classic

1986-1990

Chevrolet

Caprice

Classic Brougham

1978,1981-1982

Chevrolet

Caprice

Classic Estate

1978-1981

Chevrolet

Caprice

Classic Landau

1993-1994

Chevrolet

Caprice

Classic LS

1987-1990

Chevrolet

Caprice

Classic LS Brougham

1991-1993

Chevrolet

Caprice

Classic LTZ

1979-1980

Chevrolet

Caprice

Classic Sport

1994-1996

Chevrolet

Impala

SS

1977-1981

Pontiac

Bonneville

Base

1977-1981

Pontiac

Bonneville

Brougham

1978-1981

Pontiac

Bonneville

Safari

1977-1981

Pontiac

Catalina

Base

1977-1981

Pontiac

Catalina

Safari

## Details

- **Price:** 405.35 CAD
- **Vendor:** UMI Performance
- **Type:** Control Arms

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 405.35 CAD | In stock |

## Images

- Photo - Primary

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/umi-performance-78-96-gm-b-body-adjustable-upper-control-arms-ultimate-arms-1)
> Updated: 2026-07-14