{"product_id":"michelin-ultra-heavy-duty-21-inner-tube-tr-4-center-metal-valve-part-73810","title":"MICHELIN Ultra Heavy Duty 21\" Inner Tube – TR-4 Center Metal Valve | Part #73810","description":"\u003ch2\u003eMICHELIN Ultra Heavy Duty 21-Inch Inner Tube – TR-4 | Part #73810\u003c\/h2\u003e\n\u003cp\u003eEngineered for serious off-road performance, the \u003cstrong\u003eMICHELIN 21\" Ultra Heavy Duty Inner Tube (Part #73810)\u003c\/strong\u003e features a reinforced \u003cstrong\u003e4 mm wall thickness\u003c\/strong\u003e and a center-mounted \u003cstrong\u003eTR-4 metal valve\u003c\/strong\u003e to deliver maximum puncture resistance and reliable inflation retention on the most demanding terrain.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e4 mm Reinforced Wall Thickness:\u003c\/strong\u003e Significantly reduces puncture and pinch flat risk on rocky, rooted, or debris-covered trails.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTR-4 Center Metal Valve:\u003c\/strong\u003e Airtight seal with straightforward inflation and deflation — compatible with standard valve tools and pump heads.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUltra Heavy Duty Build:\u003c\/strong\u003e Designed to handle sustained high-load use and harsh environmental exposure without premature wear or failure.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e21-Inch Fitment:\u003c\/strong\u003e Sized for 21\" front wheel applications common on enduro, motocross, trail, and adventure motorcycles.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMICHELIN Engineering:\u003c\/strong\u003e Manufactured to MICHELIN’s exacting standards for tire technology, ensuring consistent quality and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e MICHELIN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number (MPN):\u003c\/strong\u003e 73810\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e 73810\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTube Size:\u003c\/strong\u003e 21 Inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWall Thickness:\u003c\/strong\u003e 4 mm (Ultra Heavy Duty)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eValve Type:\u003c\/strong\u003e TR-4 Center Metal Valve\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 4.3 lbs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Off-road motorcycle, enduro, motocross, trail, adventure\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Right Tube for Demanding Riders\u003c\/h3\u003e\n\u003cp\u003eThe 21\" front wheel is the most common size on off-road and dual-sport motorcycles, and it takes a beating on technical terrain. The MICHELIN #73810 ultra heavy duty tube is purpose-built to absorb that punishment — keeping you on the trail longer and reducing costly flat-related downtime. Pair it with your favorite knobby tire for a bulletproof front wheel setup.\u003c\/p\u003e","brand":"MICHELIN","offers":[{"title":"Default Title","offer_id":47733403844849,"sku":"73810","price":47.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0626\/1348\/7857\/files\/112125.png?v=1769405505","url":"https:\/\/howlingmoto.com\/products\/michelin-ultra-heavy-duty-21-inner-tube-tr-4-center-metal-valve-part-73810","provider":"Howling Moto","version":"1.0","type":"link"}