{"product_id":"curt-2-5-16-chrome-trailer-hitch-ball-20-000-lb-gtw-1-1-4-x-2-3-4-shank-fine-thread","title":"CURT 2-5\/16\" Chrome Trailer Hitch Ball 20,000 lb GTW — 1-1\/4\" x 2-3\/4\" Shank, Fine Thread","description":"\u003cp\u003e\u003cstrong\u003eCURT 40008 is a heavy-duty 2-5\/16\" chrome trailer hitch ball rated for up to 20,000 lbs gross trailer weight, with a 1-1\/4\" x 2-3\/4\" shank and supplied hex nut plus lock washer.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis tow ball is built for rugged towing chores where strength, fit, and corrosion resistance matter. Hot-forged, heat-treated steel forms the core of the CURT 40008, finished in chrome to resist weather and road grime. It’s engineered to match standard 2-5\/16\" couplers and to install securely on properly rated ball mounts or hitch platforms.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this hitch ball match my trailer and coupler?\u003c\/h3\u003e\n\u003cp\u003eThe CURT 40008 has a 2-5\/16\" ball diameter, the common sizing for many heavy-duty trailer couplers. The ball and shank dimensions ensure proper seating and clearance with compatible couplers and mounts when you confirm platform thickness and hole diameter first.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBall diameter: 2-5\/16\" — fits standard 2-5\/16\" couplers.\u003c\/li\u003e\n  \u003cli\u003eShank diameter: 1-1\/4\" and length: 2-3\/4\" for ample mounting engagement.\u003c\/li\u003e\n  \u003cli\u003eZero rise (0\") — designed for level towing when used with appropriate mounts.\u003c\/li\u003e\n  \u003cli\u003eCheck that your ball mount hole accepts a 1-1\/4\" shank and platform is at least 3\/8\" thick.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat towing capacity and safety specs should I expect?\u003c\/h3\u003e\n\u003cp\u003eThis model carries a 20,000 lb gross trailer weight (GTW) rating when installed correctly and used within the limits of the hitch system. CURT manufactures and tests to meet U.S. VESC guidelines; nevertheless, the lowest-rated component in your towing setup determines safe limits.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRated GTW: 20,000 lbs — based on component testing and specification.\u003c\/li\u003e\n  \u003cli\u003eInstallation torque: 450 ft-lbs recommended for the hex nut to secure the shank.\u003c\/li\u003e\n  \u003cli\u003eIncludes zinc-plated hex nut and helical lock washer for a dependable connection.\u003c\/li\u003e\n  \u003cli\u003eAlways verify vehicle, hitch receiver, ball mount, and trailer coupler ratings before towing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the finish and thread type affect durability and holding power?\u003c\/h3\u003e\n\u003cp\u003eThe CURT 40008 uses a chrome-style plating that sheds moisture and road contaminants to slow corrosion. Fine threads on the shank improve clamp strength between the mount and nut, giving a firmer hold when torqued to specification.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFinish: nickel-chrome plating for increased resistance to rust and wear.\u003c\/li\u003e\n  \u003cli\u003eThreads: fine thread profile for superior holding after correct tightening.\u003c\/li\u003e\n  \u003cli\u003eHardware: included zinc-plated nut and helical lock washer resist loosening in service.\u003c\/li\u003e\n  \u003cli\u003eMaintenance: inspect for corrosion or thread wear before long tow runs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat do I need to check before ordering and installing?\u003c\/h3\u003e\n\u003cp\u003eBuying the right hitch ball means confirming coupler size, ball-mount hole diameter, and the required shank length for safe engagement. Proper installation—using the recommended torque and a sufficiently thick mounting platform—ensures the rated capacity can be used safely.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eConfirm coupler accepts a 2-5\/16\" ball and that your hitch accepts a 1-1\/4\" shank.\u003c\/li\u003e\n  \u003cli\u003ePlatform thickness should be at least 3\/8\" for mounting strength.\u003c\/li\u003e\n  \u003cli\u003eUse the supplied hex nut and lock washer; torque to 450 ft-lbs as specified.\u003c\/li\u003e\n  \u003cli\u003eRemember the towing system limit is the lowest-rated component’s capacity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The CURT 40008 is aimed at drivers who tow heavy equipment, large utility trailers, RVs, boats, or agricultural loads and need a robust, standards-compliant 2-5\/16\" trailer ball. Choose this model if your vehicle, hitch, and trailer setup require a 20,000 lb-rated ball with a 1-1\/4\" shank, corrosion resistance, and secure hardware for dependable, heavy-duty towing.\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: Is this CURT ball compatible with my 2-5\/16\" coupler?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — the ball diameter is 2-5\/16\" and fits standard 2-5\/16\" couplers; confirm your ball mount accepts a 1-1\/4\" shank.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What torque should I use when installing the CURT 40008?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Torque the hex nut to 450 ft-lbs and use a mounting platform at least 3\/8\" thick for safe installation.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"CURT","offers":[{"title":"Default Title","offer_id":48086028517534,"sku":"B00HHCBHX8","price":42.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/curt-40008-front-view-chrome-ball.jpg?v=1785882209","url":"https:\/\/northtrailauto.ca\/products\/curt-2-5-16-chrome-trailer-hitch-ball-20-000-lb-gtw-1-1-4-x-2-3-4-shank-fine-thread","provider":"North Trail Auto","version":"1.0","type":"link"}