{"product_id":"tuxihapp-roof-box-u-bolt-clamps-4pcs-stainless-steel-mounting-kit-83mm-103mm-u-bolts-rubber-washers","title":"Tuxihapp Roof Box U-Bolt Clamps 4PCS Stainless Steel Mounting Kit — 83mm\/103mm U-Bolts, Rubber Washers","description":"\u003cstrong\u003eTuxihapp 4PCS Roof Box U-Bolt Clamps are a stainless-steel mounting kit that secures rooftop cargo boxes to most crossbars, adding stability and vibration protection during drives.\u003c\/strong\u003e\n\n\u003cp\u003eThis Tuxihapp kit includes four U-shaped stainless steel bolts, rubber washers, backing plates, lock nuts, two reinforcement straps and a hole-sealing sticker. Built for repeated use in changing weather, the components combine metal strength with cushioning rubber and plastic to protect both your roof box and vehicle crossbars. Installation is straightforward and designed to fit common crossbar widths, making it a practical add-on for weekend trips or daily cargo needs.\u003c\/p\u003e\n\n\u003ch3\u003eHow do these U-bolt clamps attach to my roof box and crossbars?\u003c\/h3\u003e\n\u003cp\u003eThe clamps loop around your vehicle crossbar and bolt through the roof box mounting points using the supplied backing plates and lock nuts. Rubber washers cushion contact points to reduce wear and block vibration, while the lock nuts secure fitment under load.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFour stainless-steel U-bolts sized with 83mm inner width and 103mm outer width\u003c\/li\u003e\n  \u003cli\u003eBacking plates and 8 lock nuts for tight, reliable fastening\u003c\/li\u003e\n  \u003cli\u003eRubber washers to protect paint and absorb vibration\u003c\/li\u003e\n  \u003cli\u003eTwo reinforcement straps to stabilize the box on rough roads\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this mounting kit fit my vehicle’s crossbars?\u003c\/h3\u003e\n\u003cp\u003eMeasure your crossbar width before buying: the U-bolts accommodate crossbars up to about 3.34 inches wide. The kit is compatible with most sedans, SUVs and off-road vehicles that use standard roof box mounting holes and crossbar sizes within that limit.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eInner bracket width: 83 mm (3.27 in)\u003c\/li\u003e\n  \u003cli\u003eOuter bracket width: 103 mm (4.04 in)\u003c\/li\u003e\n  \u003cli\u003eWorks with crossbars up to 3.34 in wide—check your crossbar profile\u003c\/li\u003e\n  \u003cli\u003eIncludes a sealing sticker for neat hole coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow durable and weather-resistant are the components?\u003c\/h3\u003e\n\u003cp\u003eKey parts are stainless steel with plastic and rubber elements chosen for corrosion resistance and wear durability. The materials resist typical road exposure—rain, salt spray and UV—so the kit remains dependable across seasons when properly installed and inspected.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eStainless-steel U-bolts resist rust and retain strength\u003c\/li\u003e\n  \u003cli\u003ePlastic back plates won’t deform easily under torque\u003c\/li\u003e\n  \u003cli\u003eRubber washers buffer impacts and reduce noise\u003c\/li\u003e\n  \u003cli\u003eLightweight parts are easy to store when not in use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow quick is the installation and what tools are required?\u003c\/h3\u003e\n\u003cp\u003eMost users finish installation in 3–5 minutes per U-bolt with basic hand tools. No advanced skills are needed: align the U-bolt, add washers and backing plate, and tighten the lock nuts to secure the box. The included straps help keep the box stable while you fasten everything.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEstimated install time: 3–5 minutes per clamp for an experienced do-it-yourselfer\u003c\/li\u003e\n  \u003cli\u003eRequires common wrenches or a socket set for lock nuts\u003c\/li\u003e\n  \u003cli\u003eClear instructions and pre-measured parts speed fitting\u003c\/li\u003e\n  \u003cli\u003eSealing sticker covers any visible holes for a finished look\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The Tuxihapp 4PCS Roof Box U-Bolt Clamps are for drivers who already use a rooftop cargo box and want an easy-to-install, corrosion-resistant mounting upgrade. It's a practical choice for weekend adventurers, families needing extra trunk space, and anyone who wants added stability and reduced vibration for rooftop cargo without modifying crossbars permanently. Verify your crossbar width before purchasing to ensure a secure fit.\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: Are these U-bolts compatible with my roof box?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: They fit most roof boxes that use bolt-through mounts and crossbars up to 3.34 inches wide; confirm your crossbar width and hole spacing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need special tools to install the kit?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Only basic wrenches or a socket set are required; most people install each clamp in 3–5 minutes.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Tuxihapp","offers":[{"title":"Default Title","offer_id":48085307293854,"sku":"B0FL24B6ZV","price":35.73,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/tuxihapp-front-packaging-roof-box-clamps.jpg?v=1785868890","url":"https:\/\/northtrailauto.ca\/products\/tuxihapp-roof-box-u-bolt-clamps-4pcs-stainless-steel-mounting-kit-83mm-103mm-u-bolts-rubber-washers","provider":"North Trail Auto","version":"1.0","type":"link"}