{"product_id":"rough-country-universal-square-u-bolt-kit-2-5-w-x-8-5-l-9-16-thread-4-piece-e-coated","title":"Rough Country Universal Square U-Bolt Kit — 2.5\" W x 8.5\" L, 9\/16\" Thread, 4‑Piece e‑Coated","description":"\u003cp\u003e\u003cstrong\u003eRough Country's Universal Square U-Bolt Kit is a four-piece heavy-duty suspension hardware set designed to secure 2.5\" axle tubes with 9\/16\" threads while resisting corrosion and heavy use.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eReplace worn or undersized U-bolts with a purpose-built kit meant for trucks, trailers, and lifted rigs. Each square U-bolt is manufactured from high-strength steel and finished in a black e-coat to slow rust and resist road salts, moisture, and grime. The kit arrives ready to install and is a practical solution whether you’re fitting lift blocks, rebuilding an axle, or refreshing aging suspension hardware.\u003c\/p\u003e\n\n\u003ch3\u003eWill these U-bolts fit my axle and lift setup?\u003c\/h3\u003e\n\u003cp\u003eThese U-bolts are sized to fit axles with a 2.5\" outside diameter and have an inside opening of 2.5\" wide by 8.5\" long. The 9\/16\" thread size is common for medium-duty suspension work; check your leaf spring and axle measurements to confirm compatibility. Because they are square U-bolts, they clamp flat surfaces securely, making them ideal for leaf spring packs and block-style lifts.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eInside dimensions: 2.5\" width x 8.5\" length\u003c\/li\u003e\n  \u003cli\u003eThread size: 9\/16\" for standard medium-duty nuts and washers\u003c\/li\u003e\n  \u003cli\u003eDesigned for 2.5\" axle tubes\u003c\/li\u003e\n  \u003cli\u003eFour U-bolts included — one complete axle set\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow durable are the Rough Country square U-bolts in everyday and off-road use?\u003c\/h3\u003e\n\u003cp\u003eDurability starts with the steel grade and continues with a protective finish; these U-bolts pair heavy-gauge steel construction with a black e-coated surface to extend service life. The e-coating reduces surface corrosion and helps prevent pitting in harsh environments, while the solid steel core provides the clamping strength needed for towing, hauling, and off-road impacts. For added longevity, torque the fasteners to manufacturer specifications and inspect periodically for wear.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-strength steel core resists deformation under load\u003c\/li\u003e\n  \u003cli\u003eBlack e-coat prevents rust from road salt and moisture\u003c\/li\u003e\n  \u003cli\u003eDesigned to hold leaf springs and lift blocks securely\u003c\/li\u003e\n  \u003cli\u003eEasy visual inspection points for maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat’s included and how easy is installation?\u003c\/h3\u003e\n\u003cp\u003eThe kit includes four square U-bolts plus matching nuts and washers so you can complete an axle installation or replacement without sourcing extra hardware. Installation is straightforward for anyone comfortable with basic suspension work: lift and support the vehicle, position the leaf spring and\/or lift block, slide the U-bolts over the axle, and torque the nuts evenly in a crisscross pattern. Always use proper safety stands and follow torque specs for your vehicle.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eComplete kit: 4 U-bolts, nuts, washers — ready to install\u003c\/li\u003e\n  \u003cli\u003eSquare profile holds flat surfaces tightly for stability\u003c\/li\u003e\n  \u003cli\u003eSimple bolt-on replacement for worn or damaged U-bolts\u003c\/li\u003e\n  \u003cli\u003eRecommended: torque to vehicle manufacturer specifications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan this kit be used for trailer axles or custom builds?\u003c\/h3\u003e\n\u003cp\u003eYes — the universal sizing and robust design make these U-bolts suitable for many trailer and custom suspension projects that match the 2.5\" axle sizing. The square shape is commonly used where leaf spring packs or block mounts require a broad clamping surface. For unique or heavy commercial applications, verify load ratings and consider heavier or custom-grade hardware if needed.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSuitable for trailers and DIY axle rebuilds with matching dimensions\u003c\/li\u003e\n  \u003cli\u003eWorks well with block lifts and leaf spring clamps\u003c\/li\u003e\n  \u003cli\u003eUniversal style for broad compatibility across many vehicles\u003c\/li\u003e\n  \u003cli\u003eCheck application load requirements for heavy commercial use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The Rough Country Universal Square U-Bolt Kit is aimed at truck and trailer owners, DIY mechanics, and off-road enthusiasts who need a dependable, corrosion-resistant replacement or upgrade for 2.5\" axle applications. If you maintain lifted rigs, replace leaf springs, or routinely service axles and suspension hardware, this ready-to-install four-piece kit offers a reliable balance of strength, fit, and weather resistance without the hassle of sourcing individual fasteners.\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 axle size do these U-bolts fit?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: They’re sized for 2.5\" axle tubes with inside dimensions of 2.5\"W x 8.5\"L and a 9\/16\" thread.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the kit include nuts and washers?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — the set includes four square U-bolts plus matching nuts and washers, ready for installation.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Rough Country","offers":[{"title":"Default Title","offer_id":55168337314135,"sku":"B07Q2297LP","price":78.27,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/rough-country-ubolt-front-view.jpg?v=1790400834","url":"https:\/\/britishgarage.co.uk\/products\/rough-country-universal-square-u-bolt-kit-2-5-w-x-8-5-l-9-16-thread-4-piece-e-coated","provider":"British Garage","version":"1.0","type":"link"}