{"product_id":"parts-unlimited-standard-inner-tube-for-21-wheels","title":"Parts Unlimited Standard Inner Tube for 21\" Wheels","description":"\u003cp\u003eUpgrade your motorcycle's reliability with the PARTS UNLIMITED Standard Inner Tube, engineered specifically for 21\" wheels. This high-quality \u003cstrong\u003e21 inch motorcycle inner tube\u003c\/strong\u003e is crafted from 100% pure butyl polymer, ensuring superior air retention and long-lasting performance on any ride.\u003c\/p\u003e\u003ch2\u003eDescription\u003c\/h2\u003e\u003cp\u003eExperience unmatched dependability with this premium \u003cstrong\u003ebutyl inner tube\u003c\/strong\u003e, designed for the demanding conditions of motorcycle riding. Unlike other tubes that blend butyl with natural rubber, this genuine butyl construction minimizes natural air leakage, maintaining consistent tire pressure for extended periods. This not only enhances safety but also reduces the frequency of inflation, allowing you more time on the road. With a robust 2.0 mm thickness, this \u003cstrong\u003estandard motorcycle tube\u003c\/strong\u003e is built to withstand the rigors of the road, offering excellent resistance to punctures and abrasions for peace of mind on every journey. It's suitable for both front and rear wheel applications on 21\" rims, making it a versatile choice for a wide range of motorcycles. Compatibility extends to tire sizes including 2.75-21, 3.00-21, 80\/100-21, 90\/100-21, 90\/90-21, and 100\/80-21. The integrated TR-4 (Round Base) valve stem, featuring a center metal valve with threading and nuts, ensures secure inflation and straightforward maintenance, making this \u003cstrong\u003eTR-4 valve stem tube\u003c\/strong\u003e a reliable component for your motorcycle's wheels.\u003c\/p\u003e\u003ch2\u003eFeatures \u0026amp; Highlights\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperior Air Retention:\u003c\/strong\u003e Crafted from 100% pure butyl polymer, this inner tube significantly minimizes natural air leakage, ensuring your tires maintain optimal pressure longer than tubes made with blended materials.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced Durability:\u003c\/strong\u003e With a robust 2.0 mm thickness and genuine butyl construction, this tube offers excellent resistance to punctures and wear for reliable, long-term performance across various riding conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal 21\" Fitment:\u003c\/strong\u003e Designed to fit a wide array of 21\" motorcycle wheels, this tube is compatible with numerous tire sizes (e.g., 2.75-21, 90\/90-21) and suitable for both front and rear applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure TR-4 Valve System:\u003c\/strong\u003e Features a durable TR-4 (Round Base) metal valve stem with threading and nuts, providing a secure seal and hassle-free inflation and maintenance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEffortless Identification:\u003c\/strong\u003e Each inner tube is individually packaged with comprehensive sizing and valve stem type information clearly marked on the box, simplifying selection and storage.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDuty: Standard\u003c\/li\u003e\n\u003cli\u003eType: Motorcycle\u003c\/li\u003e\n\u003cli\u003eMaterial: 100% Butyl Polymer\u003c\/li\u003e\n\u003cli\u003eRim Diameter: 21\"\u003c\/li\u003e\n\u003cli\u003eTube Thickness: 2.0 mm\u003c\/li\u003e\n\u003cli\u003eMounting Position: Front\/Rear\u003c\/li\u003e\n\u003cli\u003eTube Fits Tire Sizes: 2.75-21, 3.00-21, 80\/100-21, 90\/100-21, 90\/90-21, 100\/80-21\u003c\/li\u003e\n\u003cli\u003eInner Tube Valve Stem Type: TR-4 (Round Base), Center Metal Valve (Threaded\/Nuts)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PARTS UNLIMITED","offers":[{"title":"Default Title","offer_id":62219713413450,"sku":"03500350","price":17.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/0016\/9546\/files\/145ebb0b7e12b22d14c0755869c4f0ac_82143798-4869-4d57-b2ee-5cdf6cbcd538.webp?v=1781129055","url":"https:\/\/partsdenmark.com\/it\/products\/parts-unlimited-standard-inner-tube-for-21-wheels","provider":"Parts Denmark","version":"1.0","type":"link"}