3" Leaf Spring Perch for 3.5" Axle Tube

Spec sheet

Collected from 1 supplier page - confirm fit with the supplier before ordering.

Swapping axles or building a custom leaf spring suspension? The Motobilt MB4126 Leaf Spring Perches give you a solid weld-on foundation for 3.5" diameter axle tubes, with three center pin locations to help put the axle where your build needs it. Use the center hole to keep the axle centered over the spring pin, or choose an offset hole to move it 1" forward or rearward. That adjustment gives you options when dialing in wheelbase, fitting larger tires in the wheel openings, or sorting out clearance during an axle swap. Each perch is CNC laser cut and formed from 1/4" thick A36 steel at Motobilt in Ozark, Alabama. The 7" length spreads contact along the leaf spring to help resist axle wrap, while the 3" width provides a sturdy mounting platform for compatible leaf springs. Sold as a pair for one axle. These are universal fabrication parts that require welding and proper suspension setup. Verify axle tube diameter, spring fitment, perch spacing, axle position, and pinion angle before final welding. Features and specifications Fits 3.5" diameter axle tubes Three center pin holes for centered, 1" forward, or 1" rearward axle positioning 1/4" thick A36 steel construction 7" long × 3" wide CNC laser cut and formed at Motobilt in Ozark, Alabama Weld-on installation Sold as a pair Part number: MB4126 Made in the USA

Suppliers (1)

• Motobilt

  3" Leaf Spring Perch for 3.5" Axle Tube · Orderable · stock unverified

  Checked Nov 5, 2026
  $49.00
  View at supplier

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