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Instruction Sheets for Part Number UPI-4037-B
UMI Performance Rear Adjustable Upper Control Arms
Control Arms, Rear Upper, Adjustable, Tubular, Black Powdercoated, Steel, Pair
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Estimated Ship Date: Monday 3/16/2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
4037-B
Part Type:
Product Line:
Summit Racing Part Number:
UPI-4037-B
Control Arm Style:
Tubular
Control Arm Material:
Steel
Ball Joint Included:
No
Bushings Included:
Yes
Control Arm Color:
Black
Adjustable:
Yes
Hardware Included:
No
Bushing Material:
Spherical bearing/Delrin®
Quantity:
Sold as a pair.
Notes:
Control arms have Roto-Joints in place of bushings.
UMI Performance Rear Adjustable Upper Control Arms
UMI Performance adjustable upper control arms feature CNC-machined 0.250 in. mild steel, 4140 chromoly threaded tube adapters, and a high-strength, 4140 chromoly, heat-treated, 1.000 in. solid adjuster. With UMI Performance adjustable upper control arms, you can easily make pinion angle adjustments in the garage or at the track--it's as simple as loosening two nuts! Simply turn UMI's unique chromoly on-car adjuster with the control arms on the car to quickly lengthen or shorten the control arms. Pinion angle adjustments are a must when wanting to lower your track 60 ft. times, increase traction, and reduce unwanted wheel hop. Their PTFE-lined spherical rod end design allows for "bind-free" operation, making them great upgrades for both your track and autocross-driven vehicle.
Additional features include:
* On-car adjustability
* 3/4 in. hard chrome plated PTFE/KEVLAR® self-lubricating race rod ends
* Precision CNC-machined and fully welded
* CNC-machined 6061 aluminum step bushings
* Durable powdercoated finish
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Instructions & Calculators
Some parts are not legal for use in California or other states with similar laws / regulations
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