# UMI Performance 78-96 GM B-Body Boxed Lower Control Arm & Adjustable Upper Control Arm Kit

This kit includes one set of Boxed lower control arms and one set of on-car adjustable upper control arms, "Ultimate Arms". Both items are direct replacements of the OEM setup adding strength, ride improvement, and rear end adjustment. The lower control arms feature grease-able polyurethane bushings, reinforced sway bar holes, and a powder coat finish. The upper "Ultimate Arms" feature on-car adjustability with right and left hand threads, 4140 high strength Chrome Moly adjuster, and a QA1 Teflon lined spherical rod end. The upper control arms provide the best and easiest way to adjust pinion angle for suspension tuning. Each item is CNC machined for precise tolerances and accuracy. In addition, the QA1 Teflon lined rod end helps eliminate rear end bind, while the 4140 Chrome Moly threaded tube adaptors and heat treated adjuster offer added durability.

-   Grease-able High Quality polyurethane bushings in lower control arms
-   QA1 Teflon lined rod end to eliminate rear end bind
-   On-car adjustability in upper control arms
-   4140 Chrome Moly threaded tube adaptors
-   4140 Chrome Moly heat treated adjuster
-   CNC machined for precision

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:** 873.77 CAD
- **Vendor:** UMI Performance
- **Type:** Control Arms

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 873.77 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-boxed-lower-control-arm-adjustable-upper-control-arm-kit-1)
> Updated: 2026-07-14