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

SKU: UMI3657-R

UMI Upper Control Arms...

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

SKU: UMI3657-R

UMI Upper Control Arms...

Available from MFR. This item is available from the manufacturer's distribution centre. The dispatch timeframe shown is an estimate based on historical order processing and release times for this part. This item is not held in our own warehouse, and actual dispatch timing may vary depending on manufacturer workload and logistics at the time of ordering.

We accept

Description

Upper Control Arms

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.

Additional Information

UMI’s on-car adjustable rear control arm for GM B-Body replaces factory arms to cut wheel hop and sharpen cornering. Features greaseable bushings, TIG-welded strength, and a 4140 Chromoly adjuster. Fits 3-link or 4-link setups.

Data: v4.2 - Upd: 2026-11-08 13:47:02

Features

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

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Product Downloads

#	Document Type	Download
1.	Installation Instructions

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Data: v2 - Desc: v4.2 - Upd: 2026-11-08 09:48:34