Code: 20015S2U

LIBRA 3500lb Single Trailer Axle Suspension Kit 1750lb Leaf Springs & Ubolt Kit

(16 customer reviews)


In stock

In stock

SKU: 20015S2U Categories: , ,


  • 1,750lbs capacity per each spring, for standard 3,500lbs trailer axle,Eye to Eye length: 25-1/4 inch, Free open: 3 inch, width of leaf: 1-3/4 inch, 4 leaves, 9/16 inch bushing dia, nylon bushings installed
  • It will replace SW4B / 72-42 / LIB-401-DE / UNA212 / PR4B / 124903 / 9150014 / 93184 (different SKU# but same spring)
  • Include 3,500lbs axle U-bolt kit for 2-3/8″ dia round trailer axles , Kit include: 4 x 5-1/2″ long U bolts, U bolts dia. 1/2″; 2 x tie plates for 1-3/4″ leaf springs; 8 x 1/2″-20 hex nuts
  • LIBRA has been supplying US OEM trailer industry for over 16 years, reliable and quality parts trusted by major trailer & trailer axle manufacturers.

Additional information



Leaf Spring

1750 lbs



16 reviews for LIBRA 3500lb Single Trailer Axle Suspension Kit 1750lb Leaf Springs & Ubolt Kit

  1. Brian

    Great product: Great product

  2. Gary Lane

    Great value for the money: On my boat trailer for making some goodies it was easy to install with no hassle no aggravation it’s also made my boat ride a lot better like smoother on the ride now

  3. Average Consumer

    Good: Good

  4. Roy

    Quick and easy installation: Product is exactly what I needed. Easy replacement for my old warn out springs

  5. al james

    Direct replacement with all the necessary hardware: Exact replacement for my single axle trailer. Nice having new U bolts included because the originals needed to be cut off.

  6. chris

    Perfect replacement: Perfect replacement for our 2002 utility trailer

  7. Mason Barton

    Perfect fit: Easy to install.

  8. Terry

    Fit perfect work great: Awesome spring fit perfect and a great deal

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