--- product_id: 443170337 title: "LIBRA 3500lb Single Trailer Axle Suspension Kit | Springs U-Bolt Hanger Kit" price: "2233.45 DT" currency: TND in_stock: true reviews_count: 8 url: https://www.desertcart.tn/products/443170337-libra-3500lb-single-trailer-axle-suspension-kit-springs-u-bolt store_origin: TN region: Tunisia --- # 25.25 inch eye-to-eye length Complete U-bolt & hanger kit 3,500 lbs axle capacity LIBRA 3500lb Single Trailer Axle Suspension Kit | Springs U-Bolt Hanger Kit **Price:** 2233.45 DT **Availability:** βœ… In Stock ## Summary > πŸš› Elevate your trailer game with LIBRA’s powerhouse suspension kit! ## Quick Answers - **What is this?** LIBRA 3500lb Single Trailer Axle Suspension Kit | Springs U-Bolt Hanger Kit - **How much does it cost?** 2233.45 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/443170337-libra-3500lb-single-trailer-axle-suspension-kit-springs-u-bolt) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Precision Fit:** 25-1/4 inch eye-to-eye length and 1-3/4 inch leaf width ensure seamless replacement and optimal suspension performance. - β€’ **All-Inclusive Kit:** Includes U-bolts, tie plates, hangers, shackle straps, and hardware for a hassle-free, one-stop installation. - β€’ **Easy Installation:** Pre-assembled components and nylon bushings reduce noise and wear, saving you time and effort on the road. - β€’ **Heavy-Duty Strength:** Supports up to 3,500 lbs trailer axle load with dual 1,750 lbs leaf springs for unmatched durability. - β€’ **Trusted OEM Quality:** Backed by 16+ years of LIBRA’s industry-leading reliability, favored by major trailer manufacturers. ## Overview The LIBRA 3500lb Single Trailer Axle Suspension Kit is a robust, OEM-quality solution designed for standard 3,500 lbs trailer axles. Featuring dual 1,750 lbs leaf springs with nylon bushings, a precise 25-1/4 inch eye-to-eye length, and a comprehensive U-bolt and hanger kit, it guarantees durability, easy installation, and reliable performance trusted by industry leaders for over 16 years. ## 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: 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 single trailer axle hanger kit for 1-3/4" leaf springs, Kit include: 2 x 3" tall hangers, 2 x 2.1" tall hangers, 4 x shackle straps (eye to eye 3.09"), 6 x 9/16"-18 x 3" long shackle bolts and locknutsLIBRA has been supplying US OEM trailer industry for over 16 years, reliable and quality parts trusted by major trailer & trailer axle manufacturers. Review: Quality kit, good pkg, on time. - Kit provided all fasteners and parts needed to replace a very old system. Was impressed with how easy it was to install. Loose assemble ALL parts before tightening to aid in aligning. You will save :10 off the :65 it took me to finish the installation. Review: Good deal for the price - The shackles are pretty heavy, about 1/4" material. Makes it easy to stick Weld to 1/4" tube. All the hardware was there - total no brainer for anyone that's done any kind of trailer or suspension work. ## 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 single trailer axle hanger kit for 1-3/4" leaf springs, Kit include: 2 x 3" tall hangers, 2 x 2.1" tall hangers, 4 x shackle straps (eye to eye 3.09"), 6 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 | B09TJVC8JL | | Best Sellers Rank | #995,822 in Automotive ( See Top 100 in Automotive ) #154 in Trailer Springs | | Brand | LIBRA | | Customer Reviews | 4.4 4.4 out of 5 stars (76) | | Date First Available | February 27, 2022 | | Item Weight | 50.1 pounds | | Manufacturer | LIBRA | | Manufacturer Part Number | SW4B | | OEM Part Number | 072-42, SW4B | | Package Dimensions | 28 x 28 x 7 inches | ## Images ![LIBRA 3500lb Single Trailer Axle Suspension Kit | Springs U-Bolt Hanger Kit - Image 1](https://m.media-amazon.com/images/I/71dGcwkCGRL.jpg) ![LIBRA 3500lb Single Trailer Axle Suspension Kit | Springs U-Bolt Hanger Kit - Image 2](https://m.media-amazon.com/images/I/81lkJwswPCL.jpg) ![LIBRA 3500lb Single Trailer Axle Suspension Kit | Springs U-Bolt Hanger Kit - Image 3](https://m.media-amazon.com/images/I/51SmlUhocBL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Quality kit, good pkg, on time. *by A***R on July 28, 2024* Kit provided all fasteners and parts needed to replace a very old system. Was impressed with how easy it was to install. Loose assemble ALL parts before tightening to aid in aligning. You will save :10 off the :65 it took me to finish the installation. ### ⭐⭐⭐⭐⭐ Good deal for the price *by D***A on April 30, 2026* The shackles are pretty heavy, about 1/4" material. Makes it easy to stick Weld to 1/4" tube. All the hardware was there - total no brainer for anyone that's done any kind of trailer or suspension work. ### ⭐⭐⭐⭐⭐ Libra excellent...UPS....terrible!! *by M***H on August 17, 2022* Libra's customer service is very good. Unfortunately they shipped my order UPS, and part of it went missing. UPS out of Las Vegas is terrible. No local customer service available, no live bodies to talk to which I think is unethical. I am telling all of my suppliers not to use UPS to ship me stuff anymore..... and if they do, I will drop them as a supplier. A seller like Libra was excellent to deal with, and UPS makes them look bad. NO MORE UPS!!! ## Frequently Bought Together - LIBRA 3500lb Single Trailer Axle Suspension Kit Leaf Spring U-Bolt & Hanger Kit - MAXXHAUL 70205 Trailer Light Kit - 12V All LED, Left and Right Waterproof Submersible for Trailers, Boat Trailer Truck Marine Camper RV Snowmobile, Red - HECASA Single Axle Trailer Fenders W/Fender Backs Fits 14" to 16" Wheels - 32" x 9" x 15" Replacement for Car Hauler Trailer Cargo Trailer Utility Trailer Landscape Trailer Steel Round (2Pcs) --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/443170337-libra-3500lb-single-trailer-axle-suspension-kit-springs-u-bolt](https://www.desertcart.tn/products/443170337-libra-3500lb-single-trailer-axle-suspension-kit-springs-u-bolt) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-08-29*