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UMI Performance

UMI Performance 64-72 A-Body Boxed Lower Control Arms- Poly/Roto-Joint

MPN: 4041-b Catalog #: 001588856 Category: Control Arms Check Vehicle Fitment

Product Details

UMI's boxed lower control arms utilize our Roto-Joint technology for a bind free performance and quiet comfortable ride quality. The boxed control arms are fabricated from 0.120 wall thickness rectangular tubing, CNC machined drawn over mandrel bushing holders and MIG welded end caps to keep out unwanted road debris. Each control arm features the correct provisions for adding a stock or aftermarket rear sway bar, sway bar holes are reinforced with a 0.120 wall thickness steel sleeve that is TIG welded and sanded into place. The solid construction combined with the delrin lined Roto-Joints eliminate control arm flex and bushing deflection for improved traction and reduced wheel hop. The installed Roto-Joint is a pivot ball lined with a greaseable delrin race designed to offer 28 degrees of total unrestricted movement, more than adequate for a bind free, low friction operation. The Roto-Joint design improves performance over the factory rubber and aftermarket polyurethane bushings by allowing the suspension to articulate correctly, and provide precision handling. The installed UMI Roto-Joint allows rear end free movement when high handling, auto cross or road race is a concern while still being a 100% streetable setup. The installed delrin race, which lines the spherical ball, absorbs shock and road noise for a quiet and smooth operation on any street or track driven vehicle. This control arm set features polyurethane bushings on one end and UMI's swivel Roto-Joint on the other end. This set-up is designed for street performance and street enthusiast. The polyurethane bushing end is designed to be bolted to the vehicle chassis side while the Roto-Joint attaches to the rear end side. Since the polyurethane bushings are softer they are designed to absorb more road noise and shock before it enters the passenger compartment of the vehicle.

UMI Performance 64-72 A-Body Boxed Lower Control Arms- Poly/Roto-Joint

1964-1972 A-Body Boxed Lower Control Arms- Poly/Roto-Joint

Brilliant and durable powder coat finish

Rear Control Arms

Vehicle Fitment

Please verify year, make, model, and any notes before ordering.

Product Specs

Brand
UMI Performance
Part Number
4041-b
Catalog Number
001588856
Product Line
Lower Control Arms
Category
Suspension
Type
Control Arms
UPC / Barcode
4041-B
Vendor Product Category
Suspension
Vendor Product Subcategory
Control Arms
Length
26.00 in
Width
6.00 in
Height
6.00 in
Weight
18.00 lb
Units Per SKU
1
Freight / LTL
No
Air Restricted
No
Prop 65
Y
CARB Approved
Yes
Clearance Item
No

Shipping & Availability

Current status 1 Available - Ready to ship
Estimated timing Ships from factory

This item is showing manufacturer availability and may ship directly from the manufacturer. Tracking details are provided as soon as they become available. ETA 0-5 Days to ship.

PROP 65 WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Inventory shown: 1 available as of 6/4/2026.

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