{"product_id":"kato-2-141-ho-scale-unitrack-123mm-4-7-8-concrete-tie-straight-track-4pcs","title":"KATO 2-141 HO Scale Unitrack 123mm (4-7\/8\") Concrete Tie Straight Track - 4-Pack","description":"\u003cp\u003eThe \u003cstrong\u003eKATO 2-141\u003c\/strong\u003e is a 4-pack of HO Unitrack 123 mm (4-7\/8′′) \u003cstrong\u003econcrete-tie\u003c\/strong\u003e straight track sections — the modern-mainline variant of the standard wood-tie #2-140, with grey concrete ties molded into a grey-ballast roadbed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePrototype:\u003c\/strong\u003e Concrete ties replaced wood on many North American mainlines starting in the 1960s and are now the standard for Class-1 high-speed mainline track. Use concrete-tie Unitrack for modern mainline modelling (BNSF Transcon, NS Crescent Corridor, CP\/CN intermodal mains); reserve wood-tie for branch lines, yards, and pre-1970 modelling.\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′′ — 4 pieces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTies:\u003c\/strong\u003e Concrete (grey)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWood-tie variant:\u003c\/strong\u003e #2-140 (same length, brown ballast)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e 2-141\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KATO","offers":[{"title":"Default Title","offer_id":45099132649654,"sku":"381-2141","price":16.78,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0718\/5131\/1286\/files\/57_3406a5e0-c099-41dc-96c0-5aa6cd75b6de.jpg?v=1779569765","url":"https:\/\/oakvillemodeltrains.com\/products\/kato-2-141-ho-scale-unitrack-123mm-4-7-8-concrete-tie-straight-track-4pcs","provider":"Oakville Model Trains Depot","version":"1.0","type":"link"}