{"title":"U-Bolt Kit","description":"","products":[{"product_id":"3500-lb-trailer-axle-u-bolt-kit","title":"3,500 lb Trailer Axle U-Bolt Kit – Fits 2-3\/8\" Round Axles – 5.5\" x 1\/2\" U-Bolts with Tie Plates \u0026 Hardware","description":"\u003cp\u003eUpgrade or replace your trailer’s suspension hardware with the \u003cstrong\u003eTRAILER SUPPLIES 3,500 lb Trailer Axle U-Bolt Kit\u003c\/strong\u003e, designed for a secure and long-lasting connection between your axle and leaf springs. This kit fits standard \u003cstrong\u003e2-3\/8\" round trailer axles\u003c\/strong\u003e and \u003cstrong\u003e1-3\/4\" wide double eye or slipper leaf springs\u003c\/strong\u003e, commonly found on utility, boat, and cargo trailers.\u003c\/p\u003e\u003cp\u003eEach kit includes all the necessary hardware for a complete axle mounting solution: \u003cstrong\u003e(4) heavy-duty 5.5\" U-bolts\u003c\/strong\u003e with 1\/2\"-20 threads, \u003cstrong\u003e(8) hex nuts with lock washers\u003c\/strong\u003e, and \u003cstrong\u003e(2) tie plates\u003c\/strong\u003e. All components are zinc-coated to resist rust and corrosion, ensuring reliable performance in all weather and road conditions.\u003c\/p\u003e\u003cp\u003eWhether you are repairing an old suspension or assembling a new trailer, this U-bolt kit delivers OEM-level fit and strength, helping maintain proper axle alignment and stable towing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKit Includes:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e(4) U-bolts – 5.5\" length × 1\/2\"-20 thread – fits 2-3\/8\" round axles\u003c\/li\u003e\n\u003cli\u003e(2) Tie plates – fits 1-3\/4\" wide springs\u003c\/li\u003e\n\u003cli\u003e(8) Hex nuts with lock washers\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacity:\u003c\/strong\u003e Fits 3,500 lb trailer axles\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e High-strength steel with zinc coating for corrosion resistance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Utility, boat, cargo, and other light-duty trailers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Securely fastens leaf springs to axle for safe towing\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"TRAILER SUPPLIES","offers":[{"title":"Default Title","offer_id":46881117503717,"sku":"TS-PUBR1-FBM","price":18.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/0227\/7349\/files\/u_bolt.jpg?v=1754336094"},{"product_id":"5200-7000-lb-trailer-axle-u-bolt-kit-3-inch-round-grade-5","title":"5,200–7,000 lb Axles, Fits 3\" Round Axle, 9\/16\"-18 Thread  Grade 5 U-Bolt Kit –7” U-Bolts","description":"\u003cp\u003eSecure, Reliable, and Built to Last —TRAILER SUPPLIES U-Bolt Kits are built for strength, fit, and long-term durability. Designed to securely fasten your trailer’s leaf springs to 3\" round axles, this kit includes 7-inch U-bolts, Grade 5 nuts, and reinforced mounting plates—all precision-matched to support 5,200–7,000 lb trailer axles. \u003cstrong\u003eKit Includes:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e4 × U-Bolts – 7\" long, fits 3\" round axles, 9\/16\" thread\u003c\/li\u003e\n\u003cli\u003e2 × Mounting Plates – Reinforced design for even clamping\u003c\/li\u003e\n\u003cli\u003e8 × Grade 5 Hex Nuts\u003c\/li\u003e\n\u003cli\u003e8 × Lock Washers\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAxle Compatibility:\u003c\/strong\u003e Fits 5,200–7,000 lb trailer axles with 3\" round tubes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-Duty Build:\u003c\/strong\u003e Grade 5 steel U-bolts for superior strength and vibration resistance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure Mounting:\u003c\/strong\u003e Keeps leaf springs properly aligned to axle under heavy loads\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion Protection:\u003c\/strong\u003e Zinc-plated finish resists rust, moisture, and road salt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfessional Fit:\u003c\/strong\u003e OEM-level specifications for quick, accurate installation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaintenance Tip:\u003c\/strong\u003e Replace U-bolts whenever installing a new axle or springs to maintain maximum clamping force\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal Use:\u003c\/strong\u003e Utility trailers, livestock haulers, RV trailers, equipment and flatbed trailers.\u003c\/p\u003e","brand":"TRAILER SUPPLIES","offers":[{"title":"Default Title","offer_id":46881117536485,"sku":"TS-PUBR9-FBM","price":25.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/0227\/7349\/files\/61ozb0QznbL.jpg?v=1751296305"},{"product_id":"4-leaf-double-eye-trailer-spring-kit-3500-lb-axles-replaces-sw4b","title":"3,500 lb Axles 25.25\" 4-Leaf Double Eye Trailer Springs 1-3\/4\" Wide","description":"\u003cp\u003ePerfect for suspension upgrades or replacements on trailers with 3,500 lb axles. Suitable for single or tandem axle setups on utility, boat, cargo, and livestock trailers.\u003c\/p\u003e\n\u003ch3 data-end=\"1090\" data-start=\"1062\"\u003e【One Spring】\u003c\/h3\u003e\n\u003cul data-end=\"1174\" data-start=\"1091\"\u003e\n\u003cli data-end=\"1142\" data-start=\"1091\"\u003e\n\u003cp data-end=\"1142\" data-start=\"1093\"\u003e(1) 4-leaf double eye trailer spring (1,750 lb)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1174\" data-start=\"1143\"\u003e\n\u003cp data-end=\"1174\" data-start=\"1145\"\u003ePre-installed nylon bushing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e【1 Pair】\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e(2) 4-leaf double eye trailer springs (1,750 lb each)\u003c\/li\u003e\n\u003cli\u003ePre-installed nylon bushings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e【2 Pair】\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e(4) 4-leaf double eye trailer springs (1,750 lb each)\u003c\/li\u003e\n\u003cli\u003ePre-installed nylon bushings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e【1 Pair + 1 U-Bolt Kit + Hanger Kit】\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e(2) 4-leaf double eye springs\u003c\/li\u003e\n\u003cli\u003e(4) U-bolts – 5.5\", for 2-3\/8\" axle, 1\/2\"-20 thread\u003c\/li\u003e\n\u003cli\u003e(2) Tie plates\u003c\/li\u003e\n\u003cli\u003e(8) Lock nuts\u003c\/li\u003e\n\u003cli\u003e(2) Front hangers (1-1\/2\")\u003c\/li\u003e\n\u003cli\u003e(2) Rear hangers (7\/8\")\u003c\/li\u003e\n\u003cli\u003e(4) Shackle straps – 2-5\/8\" (9\/16\" holes)\u003c\/li\u003e\n\u003cli\u003e(6) Shackle bolts – 3\" × 9\/16\"\u003c\/li\u003e\n\u003cli\u003e(6) Lock nuts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e【2 Pair + 2 U-Bolt Kit + Hanger Kit】\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e(4) 4-leaf double eye springs\u003c\/li\u003e\n\u003cli\u003e(8) U-bolts + (4) tie plates\u003c\/li\u003e\n\u003cli\u003e(6) Hangers (2 front, 2 rear, 2 center)\u003c\/li\u003e\n\u003cli\u003e(2) Equalizers – 7-3\/4\"\u003c\/li\u003e\n\u003cli\u003e(8) Shackle straps\u003c\/li\u003e\n\u003cli\u003e(14) Bolts\u003c\/li\u003e\n\u003cli\u003e(14) Lock nuts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e【1 Pair + 1 U-Bolt Kit】\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e(2) 4-leaf double eye springs\u003c\/li\u003e\n\u003cli\u003e(4) U-bolts – 5.5\", for 2-3\/8\" axle, 1\/2\"-20 thread\u003c\/li\u003e\n\u003cli\u003e(2) Tie plates\u003c\/li\u003e\n\u003cli\u003e(8) Lock nuts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt for 3,500 lb Axles\u003c\/strong\u003e – Each spring rated at 1,750 lbs for a total capacity of 3,500 lbs per axle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-Duty Steel Construction\u003c\/strong\u003e – Made from 60Si2Mn manganese steel, heat-treated for strength, and finished with corrosion-resistant coating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Compatibility\u003c\/strong\u003e – Direct replacement for SW4B, LIB-401-DE, 124903, PR4B.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmooth Ride\u003c\/strong\u003e – Double-eye design for stable, balanced suspension when paired with standard hangers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultiple Kit Options\u003c\/strong\u003e – Available as springs only, with U-bolt kits, or with complete hanger kits for full suspension replacement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eOEM \u0026amp; Compatibility\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces:\u003c\/strong\u003e SW4B, LIB-401-DE, 124903, PR4B, A226, K71-403-00\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFits:\u003c\/strong\u003e Standard 3,500 lb axles with 1-3\/4\" wide double eye leaf springs\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAxle Types:\u003c\/strong\u003e Utility, boat, cargo, and livestock trailers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"TRAILER SUPPLIES","offers":[{"title":"1 Pair","offer_id":47308918489317,"sku":null,"price":52.99,"currency_code":"USD","in_stock":true},{"title":"2 Pair","offer_id":47308918522085,"sku":null,"price":103.98,"currency_code":"USD","in_stock":true},{"title":"1 Pair+1 Ubolt Kit+1 Hanger Kit","offer_id":47308918554853,"sku":null,"price":104.99,"currency_code":"USD","in_stock":true},{"title":"2Pair+2 Ubolt Kit+1 Hanger Kit","offer_id":47308918587621,"sku":null,"price":199.99,"currency_code":"USD","in_stock":true},{"title":"1 Pair+1 Ubolt Kit","offer_id":47308918620389,"sku":null,"price":73.99,"currency_code":"USD","in_stock":true},{"title":"1 kit","offer_id":47608040685797,"sku":null,"price":52.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/0227\/7349\/files\/WA-212-ZT-1PAIR.jpg?v=1754336871"},{"product_id":"3500-lb-axles-25-25-4-leaf-double-eye-trailer-springs-1-3-4-wide-hanger-kits","title":"3,500 lb Axles 25.25\" 4-Leaf Double Eye Trailer Springs 1-3\/4\" Wide Hanger Kits","description":"\u003ch3\u003eProduct Description:\u003c\/h3\u003e\n\u003cp\u003eBuilt to support heavy loads while smoothing out the rider, the Trailer Supplies 4-leaf double eye spring is a reliable suspension component engineered for 3,500 lb trailer axles. Its four stacked steel leaves flex to absorb road shock and reduce wear and tear on your trailer frame, helping maintain proper axle alignment and ensure a level, controlled ride even over rough surfaces. \u003c\/p\u003e\n\u003cp\u003eMeasuring 25-1\/4\" eye-to-eye with a 1-3\/4\" width, this leaf spring includes pre-installed 9\/16\" nylon bushings for quieter operation and easier mounting to your trailer's suspension system. The double eye design allows secure attachment to both the hanger and shackle hardware and works well for a variety of single-axle applications, from utility and camping trailers to cargo and equipment haulers. \u003c\/p\u003e\n\u003cp\u003eMultiple kit options are available as springs only, with U-bolt kits, or with complete hanger kits for full suspension replacement. This flexibility makes it easy to choose the right setup for your maintenance or upgrade needs,  whether you're replacing worn springs or building a new trailer suspension. \u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eWhat's include: \u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e1 Pair + 1 U-Bolt Kit + Hanger Kit for single axle: \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e(2) 4-leaf double eye springs\u003cbr\u003e(4) U-bolts – 5.5\", for 2-3\/8\" axle, 1\/2\"-20 thread\u003cbr\u003e(2) Tie plates\u003cbr\u003e(8) Nuts \u0026amp; lock washers\u003cbr\u003e(2) Front hangers (1-1\/2\")\u003cbr\u003e(2) Rear hangers (7\/8\")\u003cbr\u003e(4) Shackle straps – 2-5\/8\" (9\/16\" holes)\u003cbr\u003e(6) Shackle bolts – 3\" × 9\/16\"\u003cbr\u003e(6) Lock nuts\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2 Pair + 2 U-Bolt Kit + Hanger Kit for tandem axle: \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e(4) 4-leaf double eye springs\u003cbr\u003e(8) U-bolts \u003cbr\u003e(4) tie plates\u003cbr\u003e(16) nuts \u0026amp; lock washers\u003cbr\u003e(6) Hangers (2 front, 2 rear, 2 center)\u003cbr\u003e(2) Equalizers – 7-3\/4\"\u003cbr\u003e(8) Shackle straps\u003cbr\u003e(14) Bolts\u003cbr\u003e(14) Lock nuts\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1 Pair + 1 U-Bolt Kit \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e(2) 4-leaf double eye springs\u003cbr\u003e(4) U-bolts – 5.5\", for 2-3\/8\" axle, 1\/2\"-20 thread\u003cbr\u003e(2) Tie plates\u003cbr\u003e(8) Nuts \u0026amp; lock washers\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eOEM \u0026amp; Compatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eReplaces:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSW4B, LIB-401-DE, 124903, PR4B, A226, K71-403-00\u003cbr\u003e\u003cstrong style=\"font-size: 0.875rem;\"\u003eFits:\u003c\/strong\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e \u003c\/span\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eStandard 3,500 lb axles with 1-3\/4\" wide double eye leaf springs\u003cbr\u003e\u003c\/span\u003e\u003cstrong\u003eAxle Types:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUtility, boat, cargo, and livestock trailers\u003c\/p\u003e","brand":"TRAILER SUPPLIES","offers":[{"title":"1 Pair+1 Ubolt Kit","offer_id":47627607998693,"sku":null,"price":73.99,"currency_code":"USD","in_stock":true},{"title":"1 Pair+1 Ubolt Kit+1 Hanger Kit","offer_id":47627608031461,"sku":null,"price":104.99,"currency_code":"USD","in_stock":true},{"title":"2Pair+2 Ubolt Kit+1 Hanger Kit","offer_id":47627608064229,"sku":null,"price":199.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/0227\/7349\/files\/61IWwELgD2L._AC_SL1500.jpg?v=1757022834"},{"product_id":"5200-6000-lb-axles-25-25-5-leaf-double-eye-trailer-springs-kits","title":"5,200–6,000 lb Axles 25.25\" 5-Leaf Double Eye Trailer Springs Kits","description":"\u003ch3\u003e\u003cstrong\u003eProduct Description;\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eUpgrade or replace your trailer suspension with this heavy duty leaf spring, engineered for 5,200 - 6,000 lbs axle systems, including tandem axle configurations. Ideal for utility, cargo, boat, livestock, and equipment trailers, this spring delivers dependable support, improved stability, and a smoother ride under load. \u003c\/p\u003e\n\u003cp\u003eEach spring is rated at 3,000 lb, providing up to 6,000 lbs of support per axle, and is manufactured from heat treated steel with a rust-resistant finish for long lasting durability. Built to OEM standards, it serves as a direct replacement for Dexter SW5, PR5, LIB-502-DE, and EMCO DE-SW5,  ensuring proper fit and reliable performance. \u003c\/p\u003e\n\u003cp\u003eFor fast, hassle-free installation, the spring comes with pre-installed 9\/16\" nylon bushings to reduce wear at mounting points. Multiple purchasing options are available, allowing you to choose the spring alone, with U-bolt kits, hanger kits, or as a complete all-in-one suspension package, making it easy to customize your setup for new builds or suspension upgrades. \u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eWhat's include: \u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e1 Pair + 1 U-Bolt Kit\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e(2) 5-leaf double eye leaf springs (3,000 lbs each)\u003cbr\u003e(4) U-bolts – 7-1\/4\" long, 9\/16\"-18 thread, fits 3\" round axles\u003cbr\u003e(2) Tie plates\u003cbr\u003e(8) Lock nuts + washers\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2 Pair + Hanger Kit\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e(4) 5-leaf double eye leaf springs (3,000 lbs each)\u003cbr\u003e(6) 3-1\/4\" tall hangers (uniform front\/center\/rear)\u003cbr\u003e(2) Triangle equalizers – 7-3\/4\" long\u003cbr\u003e(8) Shackle straps – 2-5\/8\"\u003cbr\u003e(14) Shackle bolts – 3\" × 9\/16\"-18\u003cbr\u003e(14) Lock nuts\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2 Pair + 2 U-Bolt Kit + 1 Hanger Kit\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e(4) 5-leaf double eye leaf springs (3,000 lbs each)\u003cbr\u003e(8) U-bolts – 7-1\/4\" × 9\/16\"-18\u003cbr\u003e(4) Tie plates\u003cbr\u003e(16) Nuts + washers\u003cbr\u003e(6) 3-1\/4\" tall hangers\u003cbr\u003e(2) 7-3\/4\" triangle equalizers\u003cbr\u003e(8) Shackle straps\u003cbr\u003e(14) Shackle bolts\u003cbr\u003e(14) Lock nuts\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eOEM \u0026amp; Compatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eReplaces:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDexter SW5, PR5, LIB-502-DE, EMCO DE-SW5\u003cbr\u003e\u003cstrong\u003eFits:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e5,200–6,000 lb Dexter-style axles with 1.75\" wide double eye leaf springs\u003cbr\u003e\u003cstrong\u003eAxle Types:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUtility, boat, cargo, equipment, and livestock trailers\u003c\/p\u003e","brand":"TRAILER SUPPLIES","offers":[{"title":"1 Pair + 1 U-Bolt Kit","offer_id":47631881896165,"sku":null,"price":96.99,"currency_code":"USD","in_stock":true},{"title":"2 Pair + Hanger Kit","offer_id":47631881928933,"sku":null,"price":206.99,"currency_code":"USD","in_stock":true},{"title":"2 Pair + 2 U-Bolt Kit + 1 Hanger Kit","offer_id":47631881961701,"sku":null,"price":237.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/0227\/7349\/files\/61uhw2dSihL._AC_SL1500__3.jpg?v=1757089716"},{"product_id":"2000-lb-u-bolt-kit-for-1-3-4-round-axles","title":"2000 lb U-Bolt Kit for 1-3\/4\" Round Axles","description":"\u003ch3 data-start=\"56\" data-end=\"395\"\u003e\u003cstrong\u003eProduct description: \u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eEnsure your trailer stays safe and stable on the road with this U-bolt kit designed for 1-3\/4\" round axles with a typical 2,000 lb capacity. This kit provides a solid, secure connection between your axle and leaf springs, keeping your suspension aligned and your trailer tracking straight even underload. Perfect for light utility trailers, campers, and car haulers, it's a reliable solution for maintaining smooth, worry-free towing. \u003c\/p\u003e\n\u003cp\u003eThe kit includes four 3\/8\" diameter, 4-1\/4\" long U-bolts, two U-bolt plats for 1-3\/4\" wide springs, and eight 3\/8\" -24 hex nuts, giving you everything needed for a clean, precise installation. The U-bolts clamp the axle tightly, preventing movement that can throw off suspension alignment, while the included plates and nuts ensure a proper fit without hunting for extra hardware. \u003c\/p\u003e\n\u003cp\u003eInstallation is straight forward, simply torque the nuts to 30 to 50  ft-lbs to secure your axle. Built from durable steel, this kit is engineered to maintain its shape under stress, providing long-lasting performance for your light duty trailer setup. \u003c\/p\u003e\n\u003cp\u003eWhether you're replacing worn hardware or assembling a new trailer, this U-bolt kit delivers strength, reliability, and peace of mind, keeping your trailer safe and stable mile after mile. \u003c\/p\u003e\n\u003ch3 data-start=\"692\" data-end=\"705\"\u003e\u003cstrong\u003eWhat's Include (1 Kit): \u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"709\" data-end=\"747\"\u003e4 x 3\/8\" x 4-1\/4\" heavy-duty U-bolts\u003cbr\u003e2 x tie plates for 1-3\/4\" wide leaf springs\u003cbr\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e8 x 1\/2\"-20 hex nuts\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"822\" data-end=\"1039\"\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"TRAILER SUPPLIES","offers":[{"title":"Default Title","offer_id":47823630270693,"sku":null,"price":25.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/0227\/7349\/files\/apubr10.jpg?v=1760112352"},{"product_id":"3-1-2-u-bolt-kit-for-8-000-lbs-round-trailer-axles-7-3-4-long-x-9-16-18-thread","title":"3-1\/2\" U-Bolt Kit for 8,000 lbs Round Trailer Axles – 7-3\/4\" Long x 9\/16\"-18 Thread","description":"\u003ch3 data-start=\"381\" data-end=\"679\"\u003e\u003cstrong\u003eProduct Description: \u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"381\" data-end=\"679\"\u003eThe U-bolt kit for Mounting 8,000 lb round trailer axles (APUBR-35) is a heavy duty suspension mounting solution engineered to securely connect your trailer's 3-1\/2\" diameter axle to its leaf springs. Designed for trailers with 8,000 lb capacity axles, this complete kit includes everything needed for a robust and reliable installation, four 8\" long U-bolts, two tie plates that fit 2\" wide springs, and eight 9\/16\"- 18 hex nuts, making it a convenient choice for both upgrades and replacement jobs.\u003c\/p\u003e\n\u003cp data-start=\"381\" data-end=\"679\"\u003eConstructed with quality steel for strength and durability, the kit delivers a tight, secure fit that keeps your axle properly aligned and helps maintain optimal suspension performance under heavy loads. Whether you're rebuilding a suspension or finishing a new trailer build, this U-bolt kit provides dependable hardware that stands up to tough towing conditions. \u003c\/p\u003e\n\u003cp data-start=\"381\" data-end=\"679\"\u003eKey benefits include durable construction build for 8,000 lb axle systems, comprehensive hardware included in one box, comprehensive hardware included in one box, and compatibility with standard lead spring widths, making it a solid foundation for safe, stable towing. \u003c\/p\u003e\n\u003ch3 data-start=\"681\" data-end=\"694\"\u003e\u003cstrong\u003eWhat's Include (1 Kit): \u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"698\" data-end=\"769\"\u003e4 raw steel U-bolts (#4200-1) – 7-3\/4\" long, 9\/16\"-18 thread diameter\u003cbr\u003e2 tie plates (#4200-3) designed for 2\" wide leaf springs\u003cbr\u003e8 hex nuts (#4203-2) for a tight, reliable fit\u003c\/p\u003e","brand":"Trailer Supplies","offers":[{"title":"Default Title","offer_id":47823663825125,"sku":null,"price":46.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/0227\/7349\/files\/apubr35.jpg?v=1760113471"},{"product_id":"heavy-duty-trailer-u-bolt-kit-for-5-200-7-000-lb-3-axles","title":"Heavy-Duty Trailer U-Bolt Kit for 5,200–7,000 lb 3\" Axles 1\/2\"-20 thread","description":"\u003ch3 data-start=\"416\" data-end=\"710\"\u003e\u003cstrong\u003eProduct description: \u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"416\" data-end=\"710\"\u003eThis heavy duty U-bolt kit is engineered to securely mount 3\" round trailer axles rated from 5,200 lbs to 7,000 lbs, making it an ideal solution for utility trailers, flatbeds, equipment haulers, and other heavy duty applications. Designed for a precise, wobble-free hit, it helps maintain proper suspension alignment for safer, more stable towing. \u003c\/p\u003e\n\u003cp data-start=\"416\" data-end=\"710\"\u003eBuilt from heat treated Grade 2 steel with clean cut threads, this kit delivers long-lasting strength, durability, and corrosion resistance, perfect for upgrades, replacements, or new trailer builds. Each kit covers one axle and installs quickly with no extra parts or tool required. With all mounting hardware included in the box, this complete U-bolt mounting solution saves time while providing dependable performance and reliability you can trust on the road. \u003c\/p\u003e\n\u003ch3 data-start=\"717\" data-end=\"756\"\u003e\u003cstrong\u003eWhat's Include: (1 kit)\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"760\" data-end=\"815\"\u003e(4) U-bolts – 7\" long with 1\/2\"-20 thread\u003cbr\u003e(2) five-hole U-bolt tie plates – fit 1-3\/4\" or 2\" wide leaf springs\u003cbr\u003e(8) 1\/2\"-20 hex nuts – heavy-duty, easy to torque\u003c\/p\u003e","brand":"Trailer Supplies","offers":[{"title":"Default Title","offer_id":47823674540261,"sku":null,"price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/0227\/7349\/files\/apubr.jpg?v=1760113819"}],"url":"https:\/\/www.wtrailer.com\/collections\/u-bolt-kit.oembed","provider":"Trailer Supplies","version":"1.0","type":"link"}