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Street Race Truck More... The Toolbox
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$99.99
$94.99
Speedway Motors Rear Axle/Leaf Spring Mounting Bracket Kit
Speedway Motors Rear Axle/Leaf Spring Mounting Bracket Kit

Speedway Motors Rear Axle/Leaf Spring Mounting Bracket Kit

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Speedway Motors Rear Axle/Leaf Spring Mounting Bracket Kit
Speedway Motors Rear Axle/Leaf Spring Mounting Bracket Kit
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Part # 91602085
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  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.

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Speedway Aluminum Extruded Leaf Spring Lowering Block
Speedway Aluminum Extruded Leaf Spring Lowering Block
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Creating a custom build means making custom components work together to meet your specific requirements or desires.  When it comes to mounting up your rear axle/leaf spring combination, Speedway Motors has you covered with these complete bracket/block/hardware kits.

Kit Includes:

  • (1) Pair of Weld-On Leaf Spring Pads for 3" Axle
  • (1) Pair of Leaf Spring Lower Shock Mount Plates, Left and Right
  • (4) 10" Leaf Spring U-Bolts for 3" Axle
  • (2) Aluminum Leaf Spring Lowering Blocks (Your Choice Height)

Leaf Spring Pads

These weld-on leaf spring pads fit 3" diameter axle tubes. Works with all 2-1/2" wide leaf springs.

Leaf Spring Shock Mount Plates

Steel leaf spring lower shock mounting plate. Left and Right side. Eases the mounting of rear shocks.

  • Accepts 2.5" leaf spring
  • Bolt holes are 3-5/8" apart center to center
  • Bolt holes are 3-1/8" center to center on flange sides
  • Bolt holes are 9/16" I.D.
  • Single shock boss

Leaf Spring U-Bolts

Speedway leaf sping axle U-bolts are a great replacement for worn out stock bolts and feature a generous length to accomodate lowering blocks (sold separately) to fine tune your ride height. U-bolts are made from heat-treated and zinc-plated steel to ensure long life and durability. All bolts are 1/2" diameter with 1/2"-20 threads. Fits rearend housings with 3" diameter axle tubes.

  • Works with 3" diameter axle tubes
  • 10" overall length
  • 6" thread length
  • 1/2"-20 thread pitch
  • Includes nylock nuts
  • Center to center of threaded end width is 3.685" with the inside to inside working width of 3.185"

Leaf Spring Lowering Blocks

Our lightweight extruded aluminum lowering blocks are stronger than billet!  Available in several heights, all 2-1/2" wide, 5" long.  The centering pin is 9/16".  These blocks will increase or decrease suspension height on most leaf spring applications and can be installed below the leaf spring to raise the vehicle or on top of the leaf spring to lower the vehicle. These lowering blocks allow you to lower your leaf spring vehicle by up to 4 inches. 

  • Lightweight aluminum lowering blocks are stronger than billet
  • 2-1/2" wide
  • 5" long
  • 9/16" centering pin
  • Increase or decrease suspension height on most leaf spring applications
  • Allows you to lower your leaf spring vehicle by up to 4 inches

THICKNESS options explained:

  • 025 = 1/4" thick
  • 050 = 1/2" thick
  • 075 = 3/4" thick
  • 100 = 1" thick
  • 150 = 1.5" thick
  • 200 = 2" thick
  • 250 = 2.5" thick
  • 300 = 3" thick
  • 350 = 3.5" thick
  • 400 = 4" thick
Some parts are not legal for use in California or other states with similar laws/regulations

What's In The Kit

Each kit from Speedway Motors is carefully packaged and delivered right to your door. Below is a list of all the items you should expect to receive when you order this kit. Some of these items may also be available for sale individually if you're here looking for replacement parts.
  • Speedway Weld-On Spring Pad for 3 Inch Axle Tube
    Qty x 1
  • Speedway Leaf Spring Lower Right Shock Mounting Plate, 2.5 Inch Spring
    Qty x 1
  • Speedway Leaf Spring Lower Left Shock Mounting Plate, 2.5 Inch Spring
    Qty x 1
  • Leaf Spring U-Bolt for 3 Inch Axle Tube, 10 Inch Long
    Qty x 4
  • Speedway Aluminum Extruded Leaf Spring Lowering Block
    Qty x 2

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  • AccuAir and Speedway Motors team up to bring you a video series explaining the basics of air suspension. Watch these videos to get a better understanding of air suspension.
  • In this article, Heath P. talks about one of the most important parts of a hot rod, the front axle. He will walk you through the history of the front axle and how to properly assemble it for your car.

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