UMI Performance 4023OFCM-B Double Adjustable Rear Control Arms Offset CrMo Black

Constructed from TIG-welded 1.250" x 0.095" 4130 chromoly steel tubing, these arms are significantly stronger and lighter than factory control arms while delivering the precision adjustability demanded by performance builds.

The offset design is the defining feature of this part number. CNC-machined aluminum offset bushings shift the control arm inward by 3/8" further than UMI's standard control arm, creating additional clearance for large tires and mini-tub configurations where maximum clearance is critical. This inward offset is also ideal for centering aftermarket rear ends.

Key Features:

• Double adjustable — allows 1" longer or 1" shorter than factory length; supplied pre-set to factory length
• 4130 CrMo construction — TIG-welded tubing and in-house machined 4130 CrMo tube adaptors for increased thread durability
• 3/4" Teflon-lined, high-load-capacity race rod ends — self-lubricating spherical rod ends eliminate rear suspension bind and provide a solid bushing feel
• CNC machined lightweight aluminum offset bushings — place the control arm 3/8" further inward than standard for added tire clearance
• Durable black powder coat finish (also available in red)
• Reuses factory hardware, or purchase new hardware separately (UMI P/N 4001)
• No sway bar holes — designed for use with aftermarket sway bars that do not attach to the control arms
• Designed and manufactured in Philipsburg, PA — USA

The double adjustment capability makes on-car tuning straightforward, allowing quick changes for wider tire clearance or rear end centering without removing the arms. The premium Teflon-lined rod ends attach via in-house machined CrMo tube adaptors, ensuring long-term thread integrity under race loads.