{"product_id":"parts-unlimited-standard-inner-tube-for-21-rim-tr-4-valve","title":"PARTS UNLIMITED Standard Inner Tube for 21\" Rim TR-4 Valve","description":"\u003cp\u003eUpgrade your ride with the PARTS UNLIMITED Standard \u003cstrong\u003emotorcycle inner tube 21 inch\u003c\/strong\u003e, engineered for reliable performance on both front and rear wheels. This premium inner tube is crafted from 100% pure butyl polymer, offering superior air retention compared to standard rubber blends.\u003c\/p\u003e\n\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003eExperience consistent tire pressure and enhanced durability with the PARTS UNLIMITED Standard Inner Tube. Unlike conventional tubes that blend butyl with natural rubber, this tube is composed entirely of 100% butyl polymer. This advanced material significantly minimizes natural air leakage, ensuring your tires maintain optimal pressure for extended periods, reducing the need for frequent re-inflation. Designed for versatility, this \u003cstrong\u003ebutyl inner tube\u003c\/strong\u003e is suitable for both front and rear motorcycle applications, perfectly fitting 21\" rims and 2.50-21 tires. Its robust 2.0 mm thickness provides reliable performance for everyday riding. The integrated TR-4 (Round Base) valve, featuring a center metal valve with threading and nuts, ensures a secure and leak-free inflation point. Each PARTS UNLIMITED inner tube is individually boxed with clear markings for size and valve type, simplifying selection and ensuring you get the correct component for your motorcycle.\u003c\/p\u003e\n\u003ch2\u003eFeatures \u0026amp; Highlights\u003c\/h2\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePure Butyl Polymer Construction:\u003c\/strong\u003e Crafted from 100% butyl polymer, this inner tube offers superior elasticity and tear resistance compared to blended alternatives, ensuring long-lasting performance.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eExtended Air Pressure Retention:\u003c\/strong\u003e The high-quality butyl material significantly reduces natural air leakage, allowing your tires to maintain optimal pressure for longer rides and less frequent checks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable Standard Duty Performance:\u003c\/strong\u003e With a robust 2.0 mm wall thickness, this inner tube provides dependable durability for everyday motorcycle use on a 21\" rim.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVersatile Fitment:\u003c\/strong\u003e Designed to fit 2.50-21 tires on 21\" rims, this tube is suitable for both front and rear motorcycle applications, offering broad compatibility.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSecure TR-4 Valve:\u003c\/strong\u003e Equipped with a sturdy TR-4 (Round Base) valve featuring a threaded metal stem and nuts, ensuring a tight, leak-proof seal for confident inflation.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eConvenient Packaging:\u003c\/strong\u003e Each inner tube is individually boxed with clear size and valve type markings, simplifying inventory and installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e PARTS UNLIMITED\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMPN\/SKU:\u003c\/strong\u003e 03500349\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Inner Tube\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDuty:\u003c\/strong\u003e Standard\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Motorcycle\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Butyl Polymer\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRim Diameter:\u003c\/strong\u003e 21\"\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTube Thickness:\u003c\/strong\u003e 2.0 mm\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTube Fits Tire Size:\u003c\/strong\u003e 2.50-21\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMounting Position:\u003c\/strong\u003e Front\/Rear\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eInner Tube Valve Stem Type:\u003c\/strong\u003e TR-4 (Round Base), Center Metal Valve (Threaded\/Nuts)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUnits:\u003c\/strong\u003e Each\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PARTS UNLIMITED","offers":[{"title":"Default Title","offer_id":62219713675594,"sku":"03500349","price":16.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/0016\/9546\/files\/145ebb0b7e12b22d14c0755869c4f0ac_19eab0f6-695f-4ffa-81ac-2f23f6b04fce.webp?v=1781129066","url":"https:\/\/partsdenmark.de\/products\/parts-unlimited-standard-inner-tube-for-21-rim-tr-4-valve","provider":"Parts Denmark","version":"1.0","type":"link"}