{"product_id":"curt-2-5-16-in-chrome-trailer-ball-40039-12-000-lb-rated-nickel-chrome-finish","title":"CURT 2-5\/16 in. Chrome Trailer Ball 40039 — 12,000 lb Rated, Nickel‑Chrome Finish","description":"\u003cp\u003e\u003cstrong\u003eCURT's 2-5\/16-inch chrome trailer ball (model 40039) is a heavy-duty, VESC-tested tow ball rated to safely handle up to 12,000 pounds when used with compatible Class 5 hitch components.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis solid tow ball is built for demanding towing jobs where strength, fit and corrosion resistance matter. Hot-forged, heat-treated steel and a nickel-chrome finish give the CURT 40039 the durability needed for hauling dump trailers, toy haulers, dual-axle utility trailers, larger RVs and similar receiver-style trailers. Designed with standard dimensions, proven fasteners and VESC testing, it’s engineered to integrate with existing Class 5 setups while protecting against the elements.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this trailer ball deliver the strength I need for heavy loads?\u003c\/h3\u003e\n\u003cp\u003eThe CURT 40039 is manufactured from hot-forged, heat-treated steel to maximize tensile strength and fatigue resistance under load. Its 12,000 lb gross trailer weight rating aligns it for heavier towing tasks when paired with matching hitch and vehicle capacities.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e12,000 lb gross trailer weight (GTW) rating\u003c\/li\u003e\n  \u003cli\u003eHot-forged, heat-treated steel construction for high strength\u003c\/li\u003e\n  \u003cli\u003eTested to U.S. VESC specifications for consistent performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this fit my coupler and hitch mount correctly?\u003c\/h3\u003e\n\u003cp\u003eThe ball uses the industry-standard 2-5\/16-inch diameter to match most 2-5\/16-inch couplers, and the 1-inch shank diameter with a 2-1\/4-inch shank length fits securely into compatible Class 5 ball mounts. Fine threads and supplied hardware ensure a snug, reliable installation when torqued to specification.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e2-5\/16\" ball diameter for standard coupler compatibility\u003c\/li\u003e\n  \u003cli\u003e1\" shank diameter, 2-1\/4\" shank length for secure mounting\u003c\/li\u003e\n  \u003cli\u003eIncludes zinc-plated hex nut and helical lock washer; 250 lb-ft torque required\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the finish protect against weather and wear?\u003c\/h3\u003e\n\u003cp\u003eThe CURT 40039 uses a nickel-chrome plating that creates a barrier to moisture, dirt and surface rust, extending service life and keeping the ball surface smooth for better coupler contact. Regular inspection and basic maintenance will preserve the finish and functionality through many towing seasons.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNickel-chrome plated surface for corrosion resistance\u003c\/li\u003e\n  \u003cli\u003eSmooth, polished ball surface reduces wear on coupler components\u003c\/li\u003e\n  \u003cli\u003eSimple cleaning and inspection prevent premature corrosion\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat installation and safety checks should I follow before towing?\u003c\/h3\u003e\n\u003cp\u003eSecure the ball using the provided hex nut and helical lock washer, tightening to the recommended 250 lb-ft torque to prevent loosening under load. Always verify the lowest-rated component in your towing setup—vehicle, hitch, ball mount or trailer—to avoid exceeding safe limits.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUse supplied zinc-plated nut and helical lock washer for secure install\u003c\/li\u003e\n  \u003cli\u003eTighten to 250 lb.-ft. torque for proper clamping force\u003c\/li\u003e\n  \u003cli\u003eConfirm all towing components meet or exceed required ratings before use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The CURT 40039 2-5\/16\" chrome trailer ball is aimed at drivers who tow heavier trailers and need a rugged, industry-standard ball that pairs with Class 5 hitch systems. It’s a practical choice for contractors, farmers, RV owners, marina operators and anyone who regularly tows multi-axle utility trailers, toy haulers, dump trailers or larger recreational trailers—so long as the vehicle and hitch are rated for the same or greater load.\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 towing capacity of the CURT 40039 trailer ball?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The CURT 40039 is rated for a 12,000 lb gross trailer weight when used with compatible Class 5 components.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What are the ball and shank dimensions?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The ball diameter is 2-5\/16 inches; the shank is 1 inch in diameter and 2-1\/4 inches long.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"CURT","offers":[{"title":"Default Title","offer_id":55165053731159,"sku":"B001EP28FA","price":48.18,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/curt-trailer-ball-front.jpg?v=1790354553","url":"https:\/\/britishgarage.co.uk\/products\/curt-2-5-16-in-chrome-trailer-ball-40039-12-000-lb-rated-nickel-chrome-finish","provider":"British Garage","version":"1.0","type":"link"}