{"product_id":"pivotrax-90-100-16-3-25-3-50-16-heavy-duty-2mm-butyl-inner-tube-with-tr4-metal-valve-for-16-mini-dirt-bikes","title":"PIVOTRAX 90\/100-16 (3.25\/3.50-16) Heavy-Duty 2mm Butyl Inner Tube with TR4 Metal Valve for 16\" Mini Dirt Bikes","description":"\u003cp\u003e\u003cstrong\u003ePIVOTRAX 90\/100-16 (3.25\/3.50-16) is a reinforced 2mm butyl inner tube with a heavy-duty TR4 straight metal valve built to replace worn tubes on 16\" mini dirt bike tires.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhen you need a dependable replacement tube for motocross, trail riding, or pit-bike practice, this PIVOTRAX inner tube delivers thicker butyl construction and a rugged valve stem engineered to resist punctures, bending, and air loss. It’s sized for 90\/100-16 and 3.25\/3.50-16 tires and designed to fit common models such as Honda CRF150R Expert (Big Wheel), CRF150F, Coolster QG-216, Baja DR125\/150, and many other 16-inch pit bikes.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the thicker 2mm butyl rubber improve durability?\u003c\/h3\u003e\n\u003cp\u003eThe 2mm reinforced butyl compound increases tear resistance and better absorbs impacts from rocks, roots, and jumps compared with thinner tubes. Thicker walls slow puncture progression and help maintain inflation under punishing off-road use.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e2mm wall thickness for improved resistance to pinches and punctures\u003c\/li\u003e\n  \u003cli\u003eButyl rubber retains air longer than natural rubber alternatives\u003c\/li\u003e\n  \u003cli\u003eReinforced material helps dampen trail vibrations and impacts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill the TR4 straight metal valve hold up during frequent tire work?\u003c\/h3\u003e\n\u003cp\u003eThe heavy-duty TR4 straight valve stem is built for repeated inflation, PSI changes, and mounting\/demounting operations. Its seamless metal design reduces the chance of leaks and resists bending when using compressors or hand pumps.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMetal TR4 valve resists bending during tire changes\u003c\/li\u003e\n  \u003cli\u003eSeamless stem construction minimizes air leaks\u003c\/li\u003e\n  \u003cli\u003eCompatible with standard valve caps and tire gauges\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich bikes and tire sizes does this tube fit?\u003c\/h3\u003e\n\u003cp\u003eThis inner tube is sized specifically for 90\/100-16 and 3.25\/3.50-16 tires, making it a direct replacement for many 16-inch mini and small-displacement dirt bikes. Check your tire sidewall and owner’s manual to confirm compatibility before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDesigned for 90\/100-16 and 3.25\/3.50-16 tire profiles\u003c\/li\u003e\n  \u003cli\u003eCommon fits: Honda CRF150R Expert (Big Wheel), CRF150F\u003c\/li\u003e\n  \u003cli\u003eAlso fits select Coolster, Baja, and other pit bikes with 16\" wheels\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this tube perform in different riding conditions?\u003c\/h3\u003e\n\u003cp\u003ePIVOTRAX engineered the tube to work reliably across varied terrain and weather. The butyl compound and reinforced valve help maintain pressure and reduce flats whether you’re trail riding, racing, or commuting on rough roads.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eStable air retention in hot or cold temperatures\u003c\/li\u003e\n  \u003cli\u003ePuncture-resistant design for off-road conditions\u003c\/li\u003e\n  \u003cli\u003eSuitable for motocross, enduro, and casual trail use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Riders and mechanics who need a rugged, low-maintenance inner tube for 16\" mini dirt bike tires—particularly owners of small CRF-series bikes, pit bikes, and similar models. Choose this tube if you want stronger puncture resistance, a reliable metal TR4 valve stem, and a straightforward, compatible replacement for frequent off-road use. Install using standard tire tools and verify tire size markings to ensure the correct fit.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this tube compatible with Honda CRF150R Big Wheel?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It fits 90\/100-16 and 3.25\/3.50-16 tires used on the CRF150R Expert (Big Wheel).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can the TR4 valve handle high PSI and frequent inflation?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The heavy-duty TR4 metal valve resists bending and seals reliably under repeated inflation.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"PIVOTRAX","offers":[{"title":"Default Title","offer_id":48087614718110,"sku":"B0B2NNN3YB","price":39.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/pivotrax-front-view-packaging_47b3f30b-08be-4ed8-aed6-573b2c2f741f.jpg?v=1785926812","url":"https:\/\/northtrailauto.ca\/products\/pivotrax-90-100-16-3-25-3-50-16-heavy-duty-2mm-butyl-inner-tube-with-tr4-metal-valve-for-16-mini-dirt-bikes","provider":"North Trail Auto","version":"1.0","type":"link"}