{"product_id":"curt-2-5-16-in-trailer-ball-chrome-40039-12-000-lb-forged-steel-tow-ball","title":"CURT 2-5\/16 in Trailer Ball Chrome 40039 — 12,000 lb Forged Steel Tow Ball","description":"\u003cp\u003e\u003cstrong\u003eCURT's 2-5\/16-inch chrome trailer ball (model 40039) is a heavy-duty tow ball engineered to safely handle up to 12,000 pounds of gross trailer weight.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for demanding towing tasks, this CURT trailer ball combines forged, heat-treated steel with a corrosion-resistant chrome finish and a threaded shank for a secure setup. It’s designed to pair with 2-5\/16\" couplers and class 5 hitch systems, making it suitable for large trailers, RVs, equipment haulers and other substantial loads when matched with properly rated towing components.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this trailer ball deliver the strength needed for heavy towing?\u003c\/h3\u003e\n\u003cp\u003eThe CURT 40039 is manufactured from hot-forged, heat-treated steel to provide high tensile strength and impact resistance under load. Its 12,000 lb gross trailer weight rating reflects controlled material processing and quality checks performed during production.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHot-forged, heat-treated steel construction for durability\u003c\/li\u003e\n  \u003cli\u003e12,000 lb gross trailer weight rating for heavy trailers\u003c\/li\u003e\n  \u003cli\u003eTested to U.S. VESC standards to ensure consistent performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this ball fit my coupler and mounting setup?\u003c\/h3\u003e\n\u003cp\u003eThe ball has a 2-5\/16\" diameter to match standard 2-5\/16\" couplers and a 1\" shank diameter with a 2-1\/4\" shank length for secure installation on compatible ball mounts. Fine threads and the included hardware allow a close, reliable connection to your hitch.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e2-5\/16\" ball diameter — fits industry-standard 2-5\/16\" couplers\u003c\/li\u003e\n  \u003cli\u003e1\" shank diameter, 2-1\/4\" shank length for common mounts\u003c\/li\u003e\n  \u003cli\u003eZinc-plated hex nut and helical lock washer included for a tight fit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the finish protect the ball from weather and wear?\u003c\/h3\u003e\n\u003cp\u003eThe polished chrome plating provides a barrier against moisture and road contaminants to reduce corrosion and surface wear. This finish keeps the ball looking clean and helps extend service life with routine maintenance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNickel-chrome plating resists rust and road grime\u003c\/li\u003e\n  \u003cli\u003eSmooth surface for easier cleaning and reduced coupling friction\u003c\/li\u003e\n  \u003cli\u003eProtective finish supports long-term reliability with occasional care\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat hardware and torque are required for safe installation?\u003c\/h3\u003e\n\u003cp\u003eCURT supplies a zinc-plated hex nut and a helical lock washer to secure the ball to the mount. Proper tightening to the specified torque is essential for a strong mechanical joint and safe towing operations.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIncludes zinc-plated hex nut and helical lock washer for secure fastening\u003c\/li\u003e\n  \u003cli\u003eFine threads help maintain clamp-down under load\u003c\/li\u003e\n  \u003cli\u003eRecommended torque: 250 ft-lb to achieve correct preload on the shank\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this product is for: The CURT 40039 2-5\/16\" trailer ball is aimed at drivers who tow heavy trailers, such as dump trailers, toy haulers, dual-axle utility trailers, larger RVs and small boats, and who already have or plan to use class 5 hitch components. Always confirm that the lowest-rated item in your towing system (vehicle hitch, ball mount, trailer coupler) meets or exceeds the 12,000 lb rating before use, and follow manufacturer torque and installation instructions for safe operation.\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 the weight capacity of the CURT 2-5\/16\" trailer ball?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: This CURT trailer ball is rated for a 12,000 lb gross trailer weight when used with properly rated towing components.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What shank size and hardware come with this trailer ball?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It has a 1\" shank diameter, 2-1\/4\" shank length and includes a zinc-plated hex nut plus helical lock washer.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"CURT","offers":[{"title":"Default Title","offer_id":48086829858974,"sku":"B001EP28FA","price":32.84,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/curt-2-5-16-front-view.jpg?v=1785907009","url":"https:\/\/northtrailauto.ca\/products\/curt-2-5-16-in-trailer-ball-chrome-40039-12-000-lb-forged-steel-tow-ball","provider":"North Trail Auto","version":"1.0","type":"link"}