{"product_id":"kato-2-143-ho-scale-unitrack-123mm-4-7-8-uncoupler-2pcs","title":"KATO 2-143 HO Scale Unitrack 123mm (4-7\/8\") Magnetic Uncoupler Track - 2-Pack","description":"\u003cp\u003eThe \u003cstrong\u003eKATO 2-143\u003c\/strong\u003e is a 2-pack of HO Unitrack 123 mm (4-7\/8′′) straight track sections with a built-in \u003cstrong\u003epermanent magnet\u003c\/strong\u003e below the ties — the Unitrack magnetic uncoupler, equivalent to Kadee's #321\/322 ramp uncoupler but factory-installed in the Unitrack roadbed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow it works:\u003c\/strong\u003e The buried magnet swings the steel uncoupling pins (\"trip pins\") on Kadee #5, #58, scale-head, and most modern magnetic knuckle couplers as cars pass over. Stop the train directly above the magnet, then back away to leave the spotted car behind — classic hands-free uncoupling for industrial spurs and yard tracks.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKATO HO Unitrack system:\u003c\/strong\u003e Each section combines Code 83 nickel-silver rail, molded plastic ties, and a factory-attached ballasted roadbed in one drop-in piece. Integrated UniJoiners replace the rail joiner + separate roadbed steps — layouts assemble five to ten times faster than sectional or flex track, and break down and reassemble cleanly. Brown ballast represents wood-tie mainline; concrete-tie variants (#2-141, #2-152) represent modern poured-concrete mainline.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eScale:\u003c\/strong\u003e HO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRail:\u003c\/strong\u003e Code 83 nickel-silver\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 123 mm \/ 4-7\/8′′ — 2 pieces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Permanent-magnet uncoupler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible:\u003c\/strong\u003e Kadee and most magnetic knuckle couplers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e 2-143\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KATO","offers":[{"title":"Default Title","offer_id":45099134484662,"sku":"381-2143","price":24.62,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0718\/5131\/1286\/files\/57_405b913c-b179-4093-8bbe-035c711b25c7.jpg?v=1777655060","url":"https:\/\/oakvillemodeltrains.com\/products\/kato-2-143-ho-scale-unitrack-123mm-4-7-8-uncoupler-2pcs","provider":"Oakville Model Trains Depot","version":"1.0","type":"link"}