Suspension and Components› Rear Suspension Components
UMI PERFORMANCE
UMI Performance 67-70 GM B-Body Tubular Upper Control/Trailing Arm
SKU: U01C 3661-R
Moderate — 2–4 hours
Description
Part #: 3661-R
Rear control arms are one of the most important suspension modifications that can be done to your GM vehicle. Stock control arms are on the borderline of "junk", with weak materials that can lead to traction loss and poor handling. The included polyurethane bushings are an excellent improvement over the OEM rubber bushings, helping to reduce traction loss and improve ride quality. These control arms are a direct bolt-on replacement designed to minimize wheel hop, improve cornering, and enhance track consistency. Whether your vehicle is a street car, drag racer, or restoration project, these arms are a great choice. Please verify whether your vehicle has (1) or (2) upper control arms. Some vehicles have a 3-link rear suspension while others have a 4-link set-up. Note: Sold individually.
Upgrade your GM suspension with these rear control arms. Stronger than stock, they reduce traction loss, improve ride quality, and minimize wheel hop. A direct bolt-on fit, they enhance cornering and track consistency.
This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
MIA's Description
Constructed from 1.750" x 0.120" DOM mild steel tubing with CNC machined bushing holders and TIG welded construction, these control arms offer superior strength over stock components.
Fitment
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Specifications
| Brand | UMI PERFORMANCE |
| Part Number | U01C 3661-R |
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Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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