• Adjustable Axle Positioning:
Includes multiple offset keys that allow you to shift the rear axle housing up to 1/4" forward or 1/4" rearward for precise alignment., • Multiple Offset Key Options:
Comes with 1/4-inch, 1/8-inch, and 0-offset keys to help achieve proper rear end tracking on leaf spring–equipped vehicles., • Improved Wheel & Tire Alignment:
Helps center wheels and tires within the wheel well, maximizing clearance and ensuring consistent vehicle stance., • Ideal for Circle Track Applications:
A great addition to leaf spring circle track cars, enabling rear end lead or trail adjustments for refined handling., • Durable Weld-On Design:
Constructed for universal fit with 3-inch axle tubes, measuring 5.5" long and 2.56" wide, sold as a matched pair.
Weld On Adjustable Leaf Spring Pad, Perch, 3 Inch Axle Tube, Pair Speedway Motors
Weld On Adjustable Leaf Spring Pad, Perch, 3 Inch Axle Tube, Pair
Sku # 54585091
Mfr. Part # 54585091
Condition
New
Brand
Speedway Motors
Sold
Pair
Details
  • Weld-on, universal leaf spring pads for 3-inch diameter axle tubes
  • Accommodates standard width 2-1/2-inch leaf spring assemblies
  • Offset key inserts permit fine-tuning of axle housing position fore and aft on leaf spring
  • Inserts work with all standard leaf spring locating pins
  • Allows centering of rear wheels in the body opening to provide maximum clearance
  • Inserts sit in machined pocket of spring pad, allowing them to be easily swapped out
  • Includes 1/4-inch offset, 1/8-inch offset, and 0 offset keys that provide up to a 1/2-inch of adjustment
  • Crafted from .250-inch steel plate and precision laser cut and CNC machined
  • Bare steel construction ready for welding to your cleaned and prepped axle tubes
  • Manufactured in house at Speedway Motors in Lincoln, NE

Adjustable Leaf Spring Pads Solve Axle Housing Location Issues

Setting up a leaf spring rear suspension involves many factors and one of them is often welding of a new leaf spring perch or pad onto each end of your original or aftermarket axle housing to locate your axle to the leaf springs and to correctly set pinion angle. Once each spring perch is welded in place and the suspension setup and at ride height some builders have found a slight forward or rearward positioning of the axle housing that does not center within the wheel opening in the body of the vehicle. This is not always a major issue, but for some people it is quite noticeable, and in certain instances where larger tires are used to enhance traction offsetting the axle housing fore or aft of centerline may prevent contact of the tire with the wheel housing or quarter panel skin. Our new offset leaf spring pads offer an easy way to relocate the axle housing for centering or tire clearance.

Sized to Fit Most Popular Rear Axle Housings

Our leaf spring pads are made and start as 1/4-inch plate steel that are laser cut and CNC machined to fit your 3-inch diameter axle tubes perfectly and work with both stock and aftermarket leaf spring U-bolts. They ship as bare steel components, so there is no paint or powder coating to remove for welding, helping you get the job done more quickly. The rear axle spring perches feature a slotted leaf spring center bolt pin pocket that is machined to accept the included offset key inserts. The pocket has a small, machined lip that retains these inserts, requiring no welding of the insert to the pad. This allows future adjustments for tire diameter or centering appearance as suspension and/or ride height changes are made. The kit includes a pair of leaf spring pads and a pair of each key insert for 0-inch offset, 1/8-inch offset, or 1/4-inch offset. The key inserts are reversable, allowing them to be used to offset the rear fore or aft up to a total of 1/2-inch in adjustment range.

There are many popular production and aftermarket axle housings that use 3-inch diameter axle tubes, including the Chrysler 8-1/4 and 9-1/4, Ford 8.8 and 9-inch, GM 10-bolt and 12-bolt, and more. This means these adjustable leaf spring mounting pads will fit a wide variety of axles no matter the project. Installing a late-model Ford 8.8 under your classic Mustang with leaf springs? Or perhaps you just ordered one of our 9-inch axle assemblies for your ’55 Chevy 210? Either way, these leaf spring pads could be just the answer to your problem and provide the much-needed visual relief and/or tire clearance your project car needs. Order a set today (do not forget U-Bolts For 3-Inch Axle Tubes too) and sleep better tonight knowing your project’s rear axle fitment issue has been solved.

Specs
MFG. Part #
54585091
Overall Length
5.5"
Overall Width
2.56"
Hole Diameter
0.58"
Material Thickness
.25"
Material Type
Steel
Finish
Natural
Sold in Quantity
Pair
Notes
Includes three pairs of offset keys in 0-inch, 1/8-inch, and 1/4-inch
Reviews

I would buy these again when needed.

Rated
Product Rating
by Bhobby1 on November 01, 2025

Summary: Works as described

Yes, I recommend this product.

Nice option if want need to move your rearend

Rated
Product Rating
by Dan on August 17, 2025

Summary: Very nice piece. small slug is used to move perch forward or back. Small machined ledge captures the slug in perch.

Yes, I recommend this product.

It's a great idea at a great price

Rated
Product Rating
by J.S. on July 23, 2025

Summary: Extra adjustability in a rear suspension is always a good thing. I had to enlarge the holes in the inserts for my application. The inserts are captured in the perch which is a nice touch.

Yes, I recommend this product.

Yes would buy again

Rated
Product Rating
by J on March 27, 2025

Summary: Nice product to be able too adjust axle

Yes, I recommend this product.

These are great for small adjustments, great product.

Rated
Product Rating
by Bowtie316 on April 04, 2024

Summary: I was putting an 8.8 in a ford ranger, also made some other suspension changes that moved the rear back 1/4 inch, these allowed me to re-center the axle in the wheelwell.

Yes, I recommend this product.

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Tech Support
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About
Speedway Motors is America’s Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 74 years. Founded in 1952 by “Speedy” Bill Smith – a racer and street rodder himself – Speedway has grown from a one-man operation to become the world’s largest manufacturer, distributor and retailer of street rod and racing products. Our industry-leading fast delivery is the result of same-day shipping from our state-of-the-art, centrally located 500,000 sq. ft. headquarters. Speedway’s size offers customers unmatched product selection and low pricing, while our excellent technical support and customer service have made us a recognized leader in the rodding and racing industries.