{"product_id":"heavyduty-20x40-bike-inner-tubes-schrader-valve-butyl-rubber-2pack","title":"20\" x 4.0\" Bike Inner Tubes - Schrader Valve, Butyl Rubber - 2 Pack","description":"\u003ch2\u003e20x4.0 Bike Inner Tubes - Schrader Valve, Butyl Rubber - Pack of 2\u003c\/h2\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePackage Contents: Two (2) inner tubes\u003c\/li\u003e\n\u003cli\u003eMaterial: High-quality butyl rubber for superior air retention and puncture resistance\u003c\/li\u003e\n\u003cli\u003eValve Type: Schrader (AV)\u003c\/li\u003e\n\u003cli\u003eValve Length: 32mm\u003c\/li\u003e\n\u003cli\u003eConstruction: Heavy-duty, increased thickness for durability\u003c\/li\u003e\n\u003cli\u003eETRTO Size: 89\/102-406\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eReplaces \/ Cross-Reference Part Numbers\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThis product is a direct replacement for inner tubes used in tires marked with the following sizes:\u003c\/li\u003e\n\u003cli\u003e20 x 3.5\u003c\/li\u003e\n\u003cli\u003e20 x 3.6\u003c\/li\u003e\n\u003cli\u003e20 x 3.8\u003c\/li\u003e\n\u003cli\u003e20 x 4.0\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility \u0026amp; Fitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTire Diameter: 20 inches\u003c\/li\u003e\n\u003cli\u003eTire Width Range: 3.5 inches to 4.0 inches\u003c\/li\u003e\n\u003cli\u003eValve Requirement: Fits bicycle rims drilled for Schrader valves\u003c\/li\u003e\n\u003cli\u003ePrimary Application: Fat tire bikes, electric bicycles (E-bikes)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen to Replace\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eVisible punctures, cuts, or abrasions on the tube surface.\u003c\/li\u003e\n\u003cli\u003eConsistent loss of air pressure after inflation.\u003c\/li\u003e\n\u003cli\u003eTube develops a bulge or deformity.\u003c\/li\u003e\n\u003cli\u003eValve stem is cracked, damaged, or leaking at the base.\u003c\/li\u003e\n\u003cli\u003eAfter a severe impact or pinch flat, as a preventative measure.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBefore installing, carefully inspect the interior of the tire for thorns, glass, or other sharp debris.\u003c\/li\u003e\n\u003cli\u003eConfirm the rim strip is in good condition and correctly covers all spoke holes.\u003c\/li\u003e\n\u003cli\u003eLightly inflate the new tube before inserting it into the tire to give it shape and prevent pinching under the tire bead.\u003c\/li\u003e\n\u003cli\u003eEnsure the valve stem is straight and perpendicular to the rim.\u003c\/li\u003e\n\u003cli\u003eSeat the tire bead evenly on both sides of the rim before inflating to the recommended pressure.\u003c\/li\u003e\n\u003cli\u003eInflate to the PSI specified on the tire's sidewall, not on the inner tube.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BlueStarsParts","offers":[{"title":"Default Title","offer_id":45772995756221,"sku":"AZ00249669","price":26.68,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2576\/7548\/files\/AZ00249669_1_b84ada29-1748-44a6-b1e0-32aece20786c.jpg?v=1762245854","url":"https:\/\/bluestarspartstrend.com\/products\/heavyduty-20x40-bike-inner-tubes-schrader-valve-butyl-rubber-2pack","provider":"BlueStars Parts","version":"1.0","type":"link"}