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Replacement Trailer Slipper Springs, Hubs and Tires For a Square Axle Utility Trailer  

Published 02/09/2022



Question:

Hello, i have a boat trailer im trying to repair and im not sure what parts to get. I have measurements but no knowledge about compatibility. The original manufacturers closed down. Is there any way to check on that? Am looking for 24" 2 ply leaf springs, 2 4" bolts for said leaf springs, 2 5 lug 4.5" hubs, 2 4.80-12 tubeless tires. I apologize if im mislabeling anything, will attach pics. Any help will be greatly appreciated, especially when it comes to compatibility. Thanks

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Expert Reply:

From your images and information provided it looks like you will need the 2-Leaf Slipper Spring # SP-177275. I have added a diagram for the measurement points on this spring for you to compare to ensure it is the correct spring. To begin it has a weight rating of 1,000lbs for the pair of springs. Measurement A-11-3/16", B-22-11/16", C-24-5/8", D-12", E-14-1/2", F-3-1/2" the spring is also 1-3/4" wide. The Wet Equalizer Bolt with Locknut and Grease Zerk # 126B2 will allow you to grease the eye bolt.

For the hub this will depend on your spindle size. We have the Easy Grease Trailer Idler Hub Assembly # AKIHUB-545-2-G-EZ-1K which fits a BT8 straight spindle which is 1" in diameter or a Easy Grease Trailer Idler Hub Assembly # AKIHUB-545-2-G-EZ-2K which fits a BTR straight spindle which is 1.063" in diameter. You will need to remove one hub assemble to measure the spindle with a Digital Caliper # PTW80157.

We also have the Taskmaster 4.80R12 Radial Trailer Tire # TT48012C.

expert reply by:
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Bud M
slipper spring radius end diagram
slipper spring radius end diagram
(click to enlarge)
Spindle Dimensions
Spindle Dimensions
(click to enlarge)
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