Speedway Motors Rear Axle/Leaf Spring Mounting Bracket Kit
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Build Your KitYou're almost there! This kit has an option or two for you to select. Let us know which options you want for your new kit.
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.
- (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
What's In The Kit
Speedway Weld-On Spring Pad for 3 Inch Axle TubePart # 54585090Qty x 1
Speedway Leaf Spring Lower Right Shock Mounting Plate, 2.5 Inch SpringPart # 91720249-RQty x 1
Speedway Leaf Spring Lower Left Shock Mounting Plate, 2.5 Inch SpringPart # 91720249-LQty x 1
Leaf Spring U-Bolt for 3 Inch Axle Tube, 10 Inch LongPart # 91043800Qty x 4
Speedway Aluminum Extruded Leaf Spring Lowering BlockPart # 91643Qty x 2
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Q & A
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.
Tim demonstrates a quick and easy solution to removing dents in your sprint car torsion tube. Check out this video for a simple fix to a common problem.
How to prepare and properly wash your sprint car as part of an organized, routine weekly maintenance.