{"product_id":"2pack-12-1-2-x-2-1-4-bike-inner-tube-12-5x2-25-inner-tube-57-203-compatible","title":"2Pack 12 1\/2 x 2 1\/4 Bike Inner Tube, 12.5x2.25 Inner Tube (57-203) Compatible","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThis 2-pack of bicycle inner tubes is intended as an aftermarket replacement for tubes sized 12 1\/2 x 2 1\/4 or 12.5x2.25. The tubes are identified with the 57-203 size designation for applications requiring that specification.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTwo inner tubes included\u003c\/li\u003e\n\u003cli\u003eFor bicycle applications\u003c\/li\u003e\n\u003cli\u003e12 1\/2 x 2 1\/4 size\u003c\/li\u003e\n\u003cli\u003e12.5x2.25 size designation\u003c\/li\u003e\n\u003cli\u003e57-203 identification\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatibility \u0026amp; Fitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBicycles requiring a 12 1\/2 x 2 1\/4 inner tube\u003c\/li\u003e\n\u003cli\u003eBicycles requiring a 12.5x2.25 inner tube\u003c\/li\u003e\n\u003cli\u003eApplications using the 57-203 size designation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eProduct Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Bicycle inner tube\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 2-pack\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 12 1\/2 x 2 1\/4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlternate Size:\u003c\/strong\u003e 12.5x2.25\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Identification:\u003c\/strong\u003e 57-203\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e What is the normal purpose of an inner tube? \u003cstrong\u003eA:\u003c\/strong\u003e An inner tube is the inflatable component fitted inside a compatible bicycle tire.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e How can I verify fitment before purchase? \u003cstrong\u003eA:\u003c\/strong\u003e Check the existing tube or tire for the 12 1\/2 x 2 1\/4, 12.5x2.25, or 57-203 size designation and confirm it matches your bicycle's requirements.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eThis is an aftermarket replacement part for the referenced application and is not represented as genuine or original equipment. Compatibility may vary by model, production date, serial number, or existing part number. Verify fitment before purchase.\u003c\/em\u003e\u003c\/p\u003e","brand":"RivetOak","offers":[{"title":"Default Title","offer_id":49122856337508,"sku":"LL1B05101","price":42.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0804\/6647\/7156\/files\/s-l1600_3f7e2e09-ed54-4910-bbe4-fcd92051f469.jpg?v=1789102192","url":"https:\/\/www.rivetoak.com\/products\/2pack-12-1-2-x-2-1-4-bike-inner-tube-12-5x2-25-inner-tube-57-203-compatible","provider":"RivetOak","version":"1.0","type":"link"}