The Wide Open Design Tube Trailing Arm is a 2.5" x 48" DOM, long travel, DIY trailing arm kit built for serious off-road suspension applications. Designed around a 2.5" O.D. x 0.25" wall DOM steel tube and reinforced with a precision machined7075 aluminum internal insert, this kit delivers exceptional strength, reduced weight, and maximum articulation for demanding terrain.

Optimized for coil-over and bypass shock systems, this trailing arm kit features premium suspension components, including a 1.25" shank x 1" bolt rod end at the front and a heavy duty chromoly bearing at the rear. Custom high misalignment spacers are included to maximize articulation and suspension travel while maintaining durability and control.

THIS IS A DIY KIT COMPONENTS DO NOT COME PRE-ASSEMBLED

Includes:

• 2.5" O.D. x 48" Length x 0.25" Wall DOM steel tube
• Precision-fit 7075 aluminum internal insert (2" diameter)
• Front rod end: 1.25" shank x 1" bolt
• Rear bearing: Chromoly 2.75" O.D. x 1.5" I.D.
• Custom high misalignment spacers (1" bolt compatible)

Specifications

• Tube Material: DOM Steel
• Tube Outer Diameter: 2.5"
• Wall Thickness: 0.25"
• Length: 48"
• Internal Insert Material: 7075 Aluminum
• Insert Diameter: 2"
• Front Joint: 1.25" shank rod end, 1" bolt
• Rear Joint: Chromoly bearing, 2.75" O.D. x 1.5" I.D.
• Assembly: DIY / builder-welded
• Suspension Type: Coil-over and bypass compatible

Fitment

• Universal off-road trailing arm applications
• Long-travel rock crawlers, buggies, trail rigs, and race vehicles
• Welding and fabrication required

Tech Insight

The 48" length makes this trailing arm ideal for long travel suspension setups where stability, control, and smooth articulation are critical. The thick wall DOM tube provides the backbone strength needed for extreme loads, while the 7075 aluminum insert adds rigidity and reduces overall weight. Dual mounting holes allow flexible shock and sway bar placement, and the premium rod end, chromoly bearing, and high misalignment spacers ensure consistent articulation without binding under full suspension travel.