{"product_id":"aeagle-4-leaf-double-eye-spring-kit-for-3500lb-trailer-axle-25-1-4-in-l-1-3-4-in-w-2-piece-u-bolt-hanger-kit","title":"Aeagle 4-Leaf Double Eye Spring Kit for 3500lb Trailer Axle (25-1\/4 in L, 1-3\/4 in W) – 2-Piece, U-Bolt \u0026 Hanger Kit","description":"\u003ch2\u003eUpgrade your trailer suspension with the Aeagle 4-Leaf Double Eye Spring Kit\u003c\/h2\u003e\n\u003cp\u003eDesigned for resilience and reliable towing, this kit combines two high-capacity springs with a complete hardware set to support a 3,500 lb trailer load. It is tailored for round axles and 2-3\/8 in diameter, delivering a balanced, steady ride on the road.\u003c\/p\u003e\n\u003cp\u003eThe 4-leaf, double-eye design distributes weight across the leaf pack, helping to minimize sag under load and improve stability during cornering and braking. The kit pairs the springs with a full U-bolt and hanger assembly, so you have a ready-to-install solution that covers both suspension and mounting hardware.\u003c\/p\u003e\n\u003ch3\u003eWhats included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2 x 4-leaf double-eye springs\u003c\/li\u003e\n  \u003cli\u003e3,500 lb axle U-bolt kit for 2-3\/8 in round axles\u003c\/li\u003e\n  \u003cli\u003eComplete single trailer axle hanger kit with all mounting hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n  \u003cli\u003eU-bolts: four pieces, 5-1\/2 in long, diameter 1\/2 in\u003c\/li\u003e\n  \u003cli\u003eTie plates for 1-3\/4 in leaf springs\u003c\/li\u003e\n  \u003cli\u003eHex nuts: eight pieces, 1\/2 in-20\u003c\/li\u003e\n  \u003cli\u003eHanger kit: two 3 in tall hangers and two 2.1 in tall hangers\u003c\/li\u003e\n  \u003cli\u003eShackle straps: four, eye to eye 3.09 in\u003c\/li\u003e\n  \u003cli\u003eShackle bolts and locknuts: six 9\/16 in-18 x 3 in\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCapacity per spring: 1,750 lb\u003c\/li\u003e\n  \u003cli\u003eTotal capacity: 3,500 lb for a two-spring setup\u003c\/li\u003e\n  \u003cli\u003eEye-to-eye length: 25-1\/4 in\u003c\/li\u003e\n  \u003cli\u003eFree open: 3 in\u003c\/li\u003e\n  \u003cli\u003eLeaf width: 1-3\/4 in\u003c\/li\u003e\n  \u003cli\u003eLeaves: 4 per spring\u003c\/li\u003e\n  \u003cli\u003eBushing diameter: 9\/16 in\u003c\/li\u003e\n  \u003cli\u003eNote: Tighten the nut horizontally for best fit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDurability, quality, and warranty\u003c\/h3\u003e\n\u003cp\u003eEach component features an anti-rust coating to resist corrosion, while manufacturing uses high-quality raw materials intended for longevity. The kit is tested before shipping and carries a 12-month warranty for extra confidence.\u003c\/p\u003e\n\u003ch3\u003eFitment and usage tips\u003c\/h3\u003e\n\u003cp\u003eDesigned to replace SW4B and to fit round axles (not square). It is compatible with 1-3\/4 in leaf springs, and the included hardware makes installation straightforward for DIY trailer projects or professional upgrades.\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: What is included in the Aeagle 4-Leaf Spring Suspension Kit?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Two 4-leaf springs, a 3,500 lb U-bolt kit, and a complete hanger kit with hardware.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What are the fitment details and warranty?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Replaces SW4B, fits round axles only, with anti-rust coating and a 12-month warranty.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Aeagle","offers":[{"title":"Default Title","offer_id":42464683098197,"sku":"B0C1YYYXLQ","price":212.77,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/3270\/4597\/files\/aeagle-4-leaf-double-eye-spring-assembly.jpg?v=1777986715","url":"https:\/\/plentytorque.co.uk\/products\/aeagle-4-leaf-double-eye-spring-kit-for-3500lb-trailer-axle-25-1-4-in-l-1-3-4-in-w-2-piece-u-bolt-hanger-kit","provider":"PlentyTorque","version":"1.0","type":"link"}