{"product_id":"aeagle-25-1-4-4-leaf-double-eye-trailer-spring-kit-1-750-lb-per-spring-2-pack-with-u-bolts","title":"Aeagle 25-1\/4\" 4-Leaf Double-Eye Trailer Spring Kit, 1,750 lb per Spring (2-Pack) with U-Bolts","description":"\u003cp\u003e\u003cstrong\u003eAeagle 25-1\/4\" 4-leaf double-eye spring kit delivers 1,750 lb capacity per spring and comes complete with U-bolts and plates for 3,500 lb trailer axles.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis replacement leaf spring assembly is engineered for trailers with round 2-3\/8\" axles and designed to restore correct ride height and load support for 3,500 lb-rated systems. The package contains two matched 4-leaf double-eye springs plus a hardware kit of four 5-1\/2\" U-bolts, tie plates sized for 1-3\/4\" springs, and the matching hex nuts — everything needed for a paired axle installation. Finished with a rust-resistant coating and factory-installed bushings, the components aim to offer straightforward fitment and reliable service life.\u003c\/p\u003e\n\n\u003ch3\u003eWill these springs fit my trailer axle?\u003c\/h3\u003e\n\n\u003cp\u003eThese springs are made specifically for round trailer axles with a 2-3\/8\" diameter and will not fit square axles. Confirm your axle diameter and spring eye spacing before ordering to ensure compatibility.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEye-to-eye length: 25-1\/4\"\u003c\/li\u003e\n  \u003cli\u003eDesigned for round axles only (2-3\/8\" diameter)\u003c\/li\u003e\n  \u003cli\u003eReplaces part number SW4B but not compatible with square-axle designs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow much weight can each spring and the kit handle?\u003c\/h3\u003e\n\n\u003cp\u003eEach spring is rated at 1,750 lb, giving the pair a combined capacity suitable for a nominal 3,500 lb trailer axle. This rating is based on the spring construction and leaf count rather than vehicle-specific loading scenarios — always follow your trailer’s manufacturer limits.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSingle spring capacity: 1,750 lb\u003c\/li\u003e\n  \u003cli\u003ePaired capacity for axle: 3,500 lb (nominal)\u003c\/li\u003e\n  \u003cli\u003eLeaf configuration: 4 leaves, 5\/16\" thickness per leaf\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat hardware is included and what are the key dimensions?\u003c\/h3\u003e\n\n\u003cp\u003eThe kit is supplied with U-bolts and tie plates tailored to fit the supplied springs and round axles, plus nuts to secure the assembly. Pay attention to thread lengths and curvature to ensure proper clamping and clearance during installation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eU-bolts: 4 pieces, 5-1\/2\" long, 1\/2\" thread diameter, 2\" thread length\u003c\/li\u003e\n  \u003cli\u003eU-bolt inside curvature (ID): 2 4\/9\" to match round axle seat\u003c\/li\u003e\n  \u003cli\u003eTie plates: 2 plates for 1-3\/4\" width leaf springs; includes 8 hex nuts (1\/2\"-20)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow durable is the spring and are there installation tips?\u003c\/h3\u003e\n\n\u003cp\u003eAeagle applies an anti-corrosion coating and uses quality steel to extend component life under road exposure. Two bushings are pre-installed per eye and the kit is inspected before shipment, but proper installation practices influence long-term performance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFinish: anti-rust coating for corrosion resistance\u003c\/li\u003e\n  \u003cli\u003eBushing diameter: 9\/16\", two per spring installed\u003c\/li\u003e\n  \u003cli\u003eInstallation note: tighten nuts horizontally to avoid poor final fit and compromised function\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This spring and U-bolt set is intended for trailer owners, DIY mechanics, and repair shops replacing worn or damaged suspension on 3,500 lb-class trailers that use round 2-3\/8\" axles. It’s best for restorations that require a matched pair of 25-1\/4\" 4-leaf double-eye springs with accompanying mounting hardware and for users who can confirm axle type and dimensions before installation.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do these springs fit square axles?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. These springs are built for round 2-3\/8\" axles and are not compatible with square-axle setups.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What comes in the kit?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Two 4-leaf double-eye springs, four 5-1\/2\" U-bolts, two tie plates, eight 1\/2\"-20 nuts, and pre-installed bushings.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Aeagle","offers":[{"title":"Default Title","offer_id":55172617699671,"sku":"B0C1Z1GCJS","price":162.03,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/aeagle-front-packaging-springs.jpg?v=1790453470","url":"https:\/\/britishgarage.co.uk\/products\/aeagle-25-1-4-4-leaf-double-eye-trailer-spring-kit-1-750-lb-per-spring-2-pack-with-u-bolts","provider":"British Garage","version":"1.0","type":"link"}