{"product_id":"lonffery-trailer-312l-shackle-strap-kit-4-pack-4-3-8-x-1-1-4-with-bushings-hardware-fits-3-500-7-200-lb-axles","title":"Lonffery Trailer 312L Shackle Strap Kit — 4-Pack 4-3\/8\" x 1-1\/4\" with Bushings \u0026 Hardware, Fits 3,500–7,200 lb Axles","description":"\u003cstrong\u003eLonffery 312L Trailer Shackle Strap Kit is a complete mounting set designed to replace or upgrade double-eye leaf spring shackles on trailers with 3,500–7,200 lb axles.\u003c\/strong\u003e\n\n\u003cp\u003eIf you need a reliable, ready-to-install shackle solution, this Lonffery kit supplies all the metal and hardware required to secure double-eye leaf springs. The package includes four 312L shackle straps sized 4-3\/8\" long by 1-1\/4\" wide, bushings, and the bolts and nuts to fasten them. It’s engineered for straightforward fitment on many common trailer axles and aims to minimize downtime during replacement.\u003c\/p\u003e\n\n\u003ch3\u003eHow do these shackle straps fit my trailer?\u003c\/h3\u003e\n\u003cp\u003eThe 312L shackle strap dimensions and included hardware make this kit compatible with a wide range of trailers that use double-eye leaf springs. Typical compatibility spans trailer axles rated between 3,500 and 7,200 pounds, but checking measurements against your existing shackles is recommended before purchase.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eStrap size: 4-3\/8\" long × 1-1\/4\" wide for standard double-eye springs.\u003c\/li\u003e\n  \u003cli\u003eKit contents: 4 shackle straps, 4 EQ-E1 bushings, 6 bolts and nuts for mounting.\u003c\/li\u003e\n  \u003cli\u003eAxle range: Generally fits trailers with 3,500–7,200 lb axles.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat’s included and why each piece matters?\u003c\/h3\u003e\n\u003cp\u003eThe kit bundles the components you need to replace or rebuild the shackle connection, so you won’t have to source parts separately. The straps provide the structural link, the bushings reduce wear and noise, and the bolts and nuts secure the assembly to the frame and spring eyes.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFour 312L shackle straps for full axle coverage (both sides, front and rear positions).\u003c\/li\u003e\n  \u003cli\u003eEQ-E1 bushings to cushion pivot points and reduce metal-on-metal contact.\u003c\/li\u003e\n  \u003cli\u003eSix 9\/16\" bolts and matching nuts to fasten straps and maintain secure attachment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow difficult is installation and what tools are needed?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward for anyone comfortable working under a trailer with basic hand tools. The kit is engineered for an easy installation experience, but lifting the trailer safely and supporting the axle is necessary before removal and replacement of old shackles.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRequired tools: jack and stands, wrench or socket set for 9\/16\" bolts, torque wrench recommended.\u003c\/li\u003e\n  \u003cli\u003eTime estimate: 1–2 hours for one axle with two people, depending on rust and access.\u003c\/li\u003e\n  \u003cli\u003eTip: Inspect spring eyes and mounting points; replace corroded fasteners as needed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this kit improve ride durability or noise?\u003c\/h3\u003e\n\u003cp\u003eReplacing worn shackles and bushings can reduce slop and metal contact that cause clunking and premature wear. While this kit doesn’t change spring rates, fresh straps and EQ-E1 bushings help restore smoother pivoting and quieter operation at the suspension joints.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNew bushings reduce vibration and metal-on-metal noise at pivot points.\u003c\/li\u003e\n  \u003cli\u003eProperly sized straps maintain alignment and prevent excessive play.\u003c\/li\u003e\n  \u003cli\u003eSecured bolts and nuts keep the assembly tight under load, improving longevity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The Lonffery Trailer Alex Shackle Kit is for trailer owners, repair shops, and DIY mechanics who need an all-in-one replacement set for double-eye leaf spring shackles. It suits those restoring older trailers, performing routine suspension maintenance, or upgrading worn components to restore secure, quieter suspension operation on trailers rated roughly 3,500 to 7,200 pounds.\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: Does this kit include everything to replace both shackles on an axle?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — the Lonffery kit includes four 312L straps, four EQ-E1 bushings, and six 9\/16 bolts and nuts, covering both sides of an axle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will these straps fit a 5,200 lb trailer axle?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Typically yes; the 312L straps commonly fit trailers with axles from 3,500 to 7,200 lb. Confirm measurements against your existing shackles before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Lonffery","offers":[{"title":"Default Title","offer_id":67591440040121,"sku":"B0C3VS5GM3","price":79.43,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/lonffery-front-packaging-shackle-kit.jpg?v=1790551278","url":"https:\/\/redleafauto.ca\/products\/lonffery-trailer-312l-shackle-strap-kit-4-pack-4-3-8-x-1-1-4-with-bushings-hardware-fits-3-500-7-200-lb-axles","provider":"Redleaf Auto","version":"1.0","type":"link"}