Leaf Spring Perch and Plates for Spring Over Axle Builds (Pair)
Artec's Leaf Spring Perch and Plates set replaces the usual U-bolt clamp on a spring-over-axle build with a bolt-through design that spreads spring load across four bolts instead of two. Built to integrate with the Artec Modular Truss system, the set includes truss end caps so the perches transition seamlessly into the truss and turn the spring mount into part of the axle's reinforcement. Three leaf pin positions give you an inch of fore-aft adjustment to fine-tune axle placement under the springs. It is a weld-on fabrication component for leaf-sprung SOA swaps, sold as a pair.
Features
- Eliminates U-bolts — spring load spreads across four bolts rather than two
- 3/8" thick top plates and perches with 1/4" gussets
- Three leaf pin positions for 1" adjustments forward or back
- Included truss end caps blend the perches into Artec Modular Trusses
- Sized for 2.5"-wide leaf springs with a 3.25"-3.375" notch
- Fits variable axle tube diameters — grind the small locating tabs for larger tubes
- Sold as a pair, one per side
Mounting hardware is not included since leaf pack thickness varies build to build; Grade 8 bolts with nylon locking nuts are the right call. Measure your spring width and tube diameter before ordering, and plan on welding — these are weld-on perches best left to a competent welder. They pair with modular trusses like the 60 Rear Truss and 14 Bolt Modular Truss, with extra Modular Truss Ends available to finish the assembly. Browse more leaf spring parts and axle reinforcements.
Specifications
Leaf Spring Perch and Plates for Spring Over Axle Builds (Pair) FAQs
Why eliminate U-bolts on a spring-over-axle build?
The bolt-through top plates spread the spring load across four bolts instead of the two clamping points a U-bolt setup gives you. That means a stronger, cleaner mount with nothing wrapping around the axle tube to snag on rocks. It also lets the perch tie directly into an Artec Modular Truss through the included end caps.
Will these fit my springs and axle?
They are sized for 2.5"-wide leaf springs with a 3.25"-3.375" notch, and they accommodate a range of axle tube diameters — grind off the small locating tabs to fit larger tubes. Three leaf pin positions give you 1" adjustments forward or back for axle placement. Measure spring width and tube diameter before ordering.
Is hardware included, and do I need to weld?
Mounting hardware is not included because leaf pack thickness varies from build to build — Grade 8 bolts with nylon locking nuts are recommended. The perches themselves are weld-on and should be installed by a competent welder, with the bare steel painted or coated after welding.
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