{"product_id":"curt-2-5-16-inch-trailer-hitch-ball-30-000-lb-raw-steel-1-1-4-shank-hot-forged-strength","title":"CURT 2-5\/16-Inch Trailer Hitch Ball 30,000 lb Raw Steel, 1-1\/4\" Shank, Hot-Forged Strength","description":"\u003cp\u003e\u003cstrong\u003eCURT 40085 is a heavy-duty 2-5\/16-inch raw steel trailer hitch ball rated for up to 30,000 pounds gross trailer weight.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for demanding towing tasks, this CURT trailer ball combines hot-forged construction, heat treatment and a raw-steel finish to deliver the strength and wear resistance required by Class 5 towing setups. It is engineered to fit standard 2-5\/16\" couplers and secures to a ball mount with a 1-1\/4\" shank and supplied fastening hardware. All components are tested to U.S. VESC specifications to meet industry safety expectations.\u003c\/p\u003e\n\n\u003ch3\u003eWill this ball fit my 2-5\/16\" coupler and hitch mount?\u003c\/h3\u003e\n\n\u003cp\u003eThe CURT 40085 uses a 2-5\/16\" diameter sphere to match most 2-5\/16\" trailer couplers and a 1-1\/4\" shank that secures into common Class 5 ball mounts. The shank length and thread spec are chosen to ensure a solid mechanical connection when installed correctly.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eBall diameter: 2-5\/16\" for standard coupler fit\u003c\/li\u003e\n  \u003cli\u003eShank diameter: 1-1\/4\" to fit Class 5 mounts\u003c\/li\u003e\n  \u003cli\u003eShank length: 2-5\/8\" to accommodate mount thickness\u003c\/li\u003e\n  \u003cli\u003eFine threads with included zinc-plated hex nut and helical lock washer\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow strong and durable is the CURT 40085 for heavy towing?\u003c\/h3\u003e\n\n\u003cp\u003eThis hitch ball is made by hot forging and then heat treating the steel to improve toughness and wear resistance for high-stress towing. It is rated for up to 30,000 pounds gross trailer weight when used with towing components that meet or exceed the same capacity.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eGross trailer weight rating: 30,000 lb\u003c\/li\u003e\n  \u003cli\u003eHot-forged steel construction for high strength\u003c\/li\u003e\n  \u003cli\u003eHeat-treated material for improved wear resistance\u003c\/li\u003e\n  \u003cli\u003eRaw steel finish balances durability with industrial toughness\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat hardware and installation details should I know?\u003c\/h3\u003e\n\n\u003cp\u003eThe CURT 40085 ships with the fastening hardware needed for a secure installation: a zinc-plated hex nut and a helical lock washer. Fine threads and the specified torque ensure the shank is held tightly to the ball mount; installation must follow the torque recommendation for safe towing.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eIncluded: zinc-plated hex nut and helical lock washer\u003c\/li\u003e\n  \u003cli\u003eThread type: fine threads for enhanced holding power\u003c\/li\u003e\n  \u003cli\u003eRequired torque: 450 lb-ft to properly seat the ball\u003c\/li\u003e\n  \u003cli\u003eRise\/drop: 0\" (straight ball geometry)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this hitch ball safety-tested and are there towing limits?\u003c\/h3\u003e\n\n\u003cp\u003eCURT tests this ball to U.S. VESC specifications to confirm performance under expected towing loads. Always respect the lowest rated component in your towing system — the vehicle, hitch, ball mount, and trailer each set limits that must not be exceeded.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eMeets U.S. VESC testing standards\u003c\/li\u003e\n  \u003cli\u003eRated capacity applies only when all towing components are rated accordingly\u003c\/li\u003e\n  \u003cli\u003eRegular inspection for wear, corrosion or thread damage is recommended\u003c\/li\u003e\n  \u003cli\u003eDo not exceed the lowest rated towing component\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The CURT 40085 is aimed at professional and serious recreational haulers who use Class 5 receiver systems — operators of dump trailers, heavy equipment haulers, dual-axle utility trailers, large RVs, or similar high-capacity rigs. It’s a fit when you need a straightforward, industrial-grade 2-5\/16\" tow ball with proven testing and robust fastening hardware; choose it only if your vehicle and hitch are rated for comparable loads.\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 gross trailer weight rating?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The CURT 40085 is rated for 30,000 pounds gross trailer weight when used with equally rated towing components.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What torque is required to install the ball?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Torque the ball nut to 450 lb-ft and use the included hex nut and helical lock washer for a secure install.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"CURT","offers":[{"title":"Default Title","offer_id":67587559522489,"sku":"B00IWT83O6","price":102.8,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/curt-40085-front-view-raw-steel-ball.jpg?v=1790512719","url":"https:\/\/redleafauto.ca\/products\/curt-2-5-16-inch-trailer-hitch-ball-30-000-lb-raw-steel-1-1-4-shank-hot-forged-strength","provider":"Redleaf Auto","version":"1.0","type":"link"}