UMI Performance
UMI Performance 67-70 GM B-Body Adjustable Upper Control/Trailing Arm
UMI Performance 67-70 GM B-Body Adjustable Upper Control/Trailing Arm
In Stock
Available to Order
Available on Stock Order
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If you find a lower price at an eligible UK retailer website, we will match it.
Fitting service at Xatrix, West Yorkshire
We can offer a fitting service for this part. Contact us for a fitting quote.
UMI Performance offers an on-car adjustable control arm for the rear of the GM B-Body vehicle. This rear upper control arm for the 65-66 GM B-Body is a direct replacement for the factory arms and is designed to minimize wheel hop, improve corning, and help track consistency. It allows for easy pinion angle adjustments without the need to remove it from the vehicle. The control arm features greaseable bushings, TIG welded construction, and a 4140 heat treated Chrome-Moly adjuster. Please verify whether your vehicle has (1) or (2) upper control arms. Six cylinder and most small block vehicles were supplied with a 3-link rear suspension while big block vehicles used a 4-link set-up.
Genuine UMI Performance. Part number 3662-R.
Ships from US warehouse.
WARNING: California Proposition 65 — this product can expose you to chemicals known to the State of California to cause cancer or reproductive harm.

Price Match Request
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Price Match Guarantee
We are committed to giving you the best price. if you find a lower price on the same item at an eligible UK retailer website, we will match it.
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Next Day UK Delivery
For in-stock item, get guaranteed next day UK delivery. Same day dispatch available on in-stock items if your order is placed before 1pm UK Time.
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Worldwide Shipping
We ship worldwide via DHL International, simply enter your full address at checkout to see the shipping option(s) and quote(s). Same day dispatch available if your order is placed before 1pm UK Time on all in stock items!
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