# UMI Performance 65-66 GM B-Body Adjustable Upper Control/Trailing Arm

UMI Performance offers an on-car adjustable control arm for the rear of the GM B-Body vehicle. This control arm is a direct replacement for the factory arms and helps minimize wheel hop and improve cornering. It allows for easy pinion angle adjustments without the need to remove it from the vehicle. The control arm features grease-able bushings, TIG welded construction, and a 4140 heat treated CrMo adjuster. This item is sold individually, so please verify how many you need for your vehicle. It is compatible with both 3-link and 4-link rear suspension set-ups.

-   On-Car Adjustability using a 4140 Heat Treated Adjuster
-   Grease-able Polyurethane Bushings
-   Durable Powder Coat Finish
-   4140 CrMo Tube Adapters
-   TIG Welded Construction

This Part Fits:

Year

Make

Model

Submodel

1965-1970

Chevrolet

Bel Air

Base

1965-1970

Chevrolet

Biscayne

Base

1966-1970

Chevrolet

Caprice

Base

1965-1970

Chevrolet

Impala

Base

1965-1967

Chevrolet

Impala

SS

## Details

- **Price:** 229.71 CAD
- **Vendor:** UMI Performance
- **Type:** Control Arms

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 229.71 CAD | In stock |

## Images

- Photo - Primary

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/umi-performance-65-66-gm-b-body-adjustable-upper-control-trailing-arm)
> Updated: 2026-07-01