---
product_id: 424531583
title: "LIBRA 3500lb Tandem Trailer Axle Suspension Kit Leaf Springs U-Bolt & Hanger Kit"
brand: "libra"
price: "433562 Ft"
currency: HUF
in_stock: true
reviews_count: 8
category: "Libra"
url: https://www.desertcart.hu/products/424531583-libra-3500lb-tandem-trailer-axle-suspension-kit-leaf-springs-u
store_origin: HU
region: Hungary
---

# 25.25 inch eye-to-eye length Complete U-bolt & hanger kit 3500lb total capacity LIBRA 3500lb Tandem Trailer Axle Suspension Kit Leaf Springs U-Bolt & Hanger Kit

**Brand:** libra
**Price:** 433562 Ft
**Availability:** ✅ In Stock

## Summary

> 🚛 Upgrade your trailer’s backbone with LIBRA’s powerhouse suspension kit!

## Quick Answers

- **What is this?** LIBRA 3500lb Tandem Trailer Axle Suspension Kit Leaf Springs U-Bolt & Hanger Kit by libra
- **How much does it cost?** 433562 Ft with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/424531583-libra-3500lb-tandem-trailer-axle-suspension-kit-leaf-springs-u)

## Best For

- libra enthusiasts

## Why This Product

- Trusted libra brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Heavy-Duty Load Support:** Handles up to 3,500lbs trailer axle with dual 1,750lbs leaf springs for unmatched durability.
- • **Ready for the Road Ahead:** Nylon bushings and corrosion-resistant coatings deliver smooth, long-lasting suspension performance.
- • **Precision Fit Engineering:** Exact 25-1/4 inch eye-to-eye length and 1-3/4 inch leaf width ensures seamless OEM replacement.
- • **Trusted Industry Standard:** LIBRA’s 16+ years supplying US OEM trailer manufacturers guarantees premium quality and reliability.
- • **All-Inclusive Installation Kit:** Includes U-bolts, tie plates, equalizers, hangers, shackles & hardware for effortless setup.

## Overview

The LIBRA 3500lb Tandem Trailer Axle Suspension Kit features dual 1,750lb leaf springs with precise 25-1/4 inch eye-to-eye length, nylon bushings, and a comprehensive U-bolt and hanger hardware set. Trusted by OEMs for over 16 years, this kit ensures a perfect fit and durable, reliable suspension for standard 3,500lb trailer axles.

## Description

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 installedIt 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: 8 x 5-1/2" long U bolts, U bolts dia. 1/2"; 4 x tie plates for 1-3/4" leaf springs; 16 x 1/2"-20 hex nuts Include Complete tandem trailer axle hanger kit for 1-3/4" leaf springs, Kit include: 2 x EQ-E1 equalizers, 6 x 3" tall hangers, 8 x shackle straps, 14 x 9/16"-18 x 3" long shackle bolts and locknuts LIBRA has been supplying US OEM trailer industry for over 16 years, reliable and quality parts trusted by major trailer & trailer axle manufacturers.

Review: Great Leaf Spring Kit - Well built - fits exactly as it should. Quality materials and coatings. I couldn't be happier with this kit. Had everything I needed and more. I have weld-in-place brackets for the leaf spring ends, so I didn't require the u-brackets that the kit provided, but nice to know if I ever break one, that I have them for the repair. Great little kit! Heavy Duty U-Bolts and mounting plates. Good quality hardware (nuts/washers/coupling plates). HIGHLY RECOMMEND
Review: Bob - Very good product for a very good price.It came 2 days early too.Super Fastshipping

## Features

- 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
- Include Complete tandem trailer axle hanger kit for 1-3/4" leaf springs, Kit include: 2 x EQ-E1 equalizers, 6 x 3" tall hangers, 8 x shackle straps, 14 x 9/16"-18 x 3" long shackle bolts and locknuts
- LIBRA has been supplying US OEM trailer industry for over 16 years, reliable and quality parts trusted by major trailer & trailer axle manufacturers.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09TJT9LJN |
| Best Sellers Rank | #159,988 in Automotive ( See Top 100 in Automotive ) #29 in Trailer Springs |
| Brand | LIBRA |
| Customer Reviews | 4.6 4.6 out of 5 stars (100) |
| Date First Available | February 27, 2022 |
| Item Weight | 53.7 pounds |
| Manufacturer | LIBRA |
| Manufacturer Part Number | SW4B |
| OEM Part Number | 072-42, SW4B |
| Package Dimensions | 27 x 11 x 6 inches |

## Images

![LIBRA 3500lb Tandem Trailer Axle Suspension Kit Leaf Springs U-Bolt & Hanger Kit - Image 1](https://m.media-amazon.com/images/I/81YEqePAYGL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great Leaf Spring Kit
*by C***D on September 10, 2024*

Well built - fits exactly as it should. Quality materials and coatings. I couldn't be happier with this kit. Had everything I needed and more. I have weld-in-place brackets for the leaf spring ends, so I didn't require the u-brackets that the kit provided, but nice to know if I ever break one, that I have them for the repair. Great little kit! Heavy Duty U-Bolts and mounting plates. Good quality hardware (nuts/washers/coupling plates). HIGHLY RECOMMEND

### ⭐⭐⭐⭐⭐ Bob
*by B***N on March 23, 2025*

Very good product for a very good price.It came 2 days early too.Super Fastshipping

### ⭐⭐⭐⭐ I would recomend.
*by B***N on October 29, 2025*

I used these to replace the warn out springs on my camper. They were an affordable solution. The quality seemed pretty good. The only concern i had, was the supplied nuts didn't seem to have much locking power compared to higher quality ones.

## Frequently Bought Together

- LIBRA 3500lb Tandem Trailer Axle Suspension Kit Leaf Springs U-Bolt & Hanger Kit
- LIBRA Trailer 5 Lugs Idler Hub Kits 5 on 4.5 5x4.5 for 3500 lbs Axle 22017K Pack 2
- LIBRA Trailer Hub Drum Kits 5 on 4.5" B.C. w/ 10" x2-1/4 Self-Adjusting Electric Brakes for 3500 Lbs Axle

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*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-03-18*