{"product_id":"curt-switch-ball-set-1-7-8-and-2-inch-trailer-balls-42178-interchangeable-heads-3-500-6-000-lbs","title":"CURT Switch Ball Set 1-7\/8 and 2 inch Trailer Balls (42178) – Interchangeable Heads, 3,500\/6,000 lbs","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe CURT Switch Ball trailer ball set combines simple elegance with rugged towing performance. Built around a single shank and a removable ball head, this system lets you adapt to different coupler sizes without juggling multiple mounts.\u003c\/p\u003e\n\u003cp\u003eThanks to an exclusive J-groove design, you can swap ball heads by twisting and lifting—no tools, pins, or extra parts required. The result is a streamlined solution that keeps your toolbox organized while delivering dependable towing support for light- and medium-duty trailers.\u003c\/p\u003e\n\u003ch3\u003eKey benefits and specs\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eFits 1-7\/8\" or 2\" couplers with a maximum capacity that depends on the chosen head (up to 6,000 lbs GTW).\u003c\/li\u003e\n  \u003cli\u003eIncludes two ball attachments: 1-7\/8\" diameter (3,500 lbs GTW) and 2\" diameter (6,000 lbs GTW).\u003c\/li\u003e\n  \u003cli\u003eNo extra ball mount, coins, or pins needed to switch heads—just twist, lift, and swap.\u003c\/li\u003e\n  \u003cli\u003eJ-groove design delivers a secure hold while allowing easy removal when needed.\u003c\/li\u003e\n  \u003cli\u003eShank bears the weight to minimize friction and reduce binding on the coupler.\u003c\/li\u003e\n  \u003cli\u003eConstructed from high-strength steel with a bright nickel-chrome finish for durability and corrosion resistance.\u003c\/li\u003e\n  \u003cli\u003e Independently tested to SAE J684 standards for reliability and safety on the road.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow it works\u003c\/h3\u003e\n\u003cp\u003eTo switch between heads, twist the Switch Ball head, lift it off, and twist another head into place. The combination of the shank and J-groove ensures a solid connection while enabling tool-free changes in the field.\u003c\/p\u003e\n\u003ch3\u003eWhat you get and specs\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eShank length: 2-1\/4\"; Shank diameter: 1\"\u003c\/li\u003e\n  \u003cli\u003eTwo interchangeable heads: 1-7\/8\" and 2\" balls\u003c\/li\u003e\n  \u003cli\u003eMaterial: high-strength steel with a bright nickel-chrome finish\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eReal-world use cases\u003c\/h3\u003e\n\u003cp\u003eIdeal for campers, small-and medium-duty trailers, or work trailers where varying coupler sizes are encountered. This set helps reduce clutter and simplifies transitions between trailers without needing multiple ball mounts.\u003c\/p\u003e\n\u003cp\u003eWhile it’s designed for reliability, users should always select the head that matches their specific coupler rating and towing needs for best performance.\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 CURT Switch Ball Set 42178?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: A two-head trailer ball kit with interchangeable heads on a single shank, for multiple couplers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How does the J-groove design help with towing?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It holds the ball securely on the shank and lets you swap heads quickly without tools.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"CURT","offers":[{"title":"Default Title","offer_id":42470276464725,"sku":"B0007LZXDQ","price":67.89,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/3270\/4597\/files\/curt-switch-ball-1-7-8-diameter.jpg?v=1778128161","url":"https:\/\/plentytorque.co.uk\/products\/curt-switch-ball-set-1-7-8-and-2-inch-trailer-balls-42178-interchangeable-heads-3-500-6-000-lbs","provider":"PlentyTorque","version":"1.0","type":"link"}