{"product_id":"2-pack-3-25-3-50-16-90-100-16-dirt-bike-inner-tube-tr4","title":"(2-Pack) 3.25\/3.50-16 (90\/100-16) Dirt Bike Inner Tube TR4","description":"\u003cp\u003e\u003cstrong\u003eGDHSWJ's 2-pack 3.25\/3.50-16 (90\/100-16) dirt bike inner tubes are heavy-duty natural rubber tubes with metal TR4 valve stems designed to deliver reliable air retention and shock absorption for 16\" off-road tires.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese replacement inner tubes fit common 16\" dirt bike tires and are built for pit bikes, trail bikes, and light off-road motorcycles. Constructed from 2mm natural rubber and fitted with straight metal TR4 valve stems, the tubes prioritize durability, waterproofing, and stable pressure retention. They are supplied as a two-pack so you can swap a spare quickly or equip two wheels with matching tubes.\u003c\/p\u003e\n\n\u003ch3\u003eWhich tire sizes and models does this 2-pack fit?\u003c\/h3\u003e\n\u003cp\u003eThe tubes are sized for 3.25\/3.50-16 tires (listed as 90\/100-16) and match most standard 16\" dirt bike rims. Compatibility covers a wide range of small-displacement off-road bikes and pit bikes.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits tire sizes: 3.25-16 and 3.50-16 (90\/100-16).\u003c\/li\u003e\n  \u003cli\u003eCommon fitment: Honda CRF150F, CR85R; Suzuki DRZ125L; Kawasaki KLX125L, KLX140L.\u003c\/li\u003e\n  \u003cli\u003eAlso suitable for many pit bikes, trail bikes, and light motocross machines with 16\" wheels.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow durable and puncture-resistant are these inner tubes?\u003c\/h3\u003e\n\u003cp\u003eMade from 2mm-thick natural rubber, the tubes offer good elasticity and impact absorption without becoming overly stiff. While not puncture-proof, the thicker rubber and quality manufacturing improve resistance to pinch flats and minor cuts common in off-road use.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e2mm natural rubber construction for enhanced shock absorption.\u003c\/li\u003e\n  \u003cli\u003eWaterproof rubber reduces air loss and improves pressure stability.\u003c\/li\u003e\n  \u003cli\u003eMetal TR4 valve stem resists bending and leakage during mounting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat advantages does the TR4 metal valve stem provide?\u003c\/h3\u003e\n\u003cp\u003eThe straight TR4 metal valve stem gives a firmer, more secure connection than some rubber stems, helping to prevent leaks and stem damage during wheel changes or high-vibration use. Metal stems also make tire inflation and pressure checks easier and more reliable.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSturdy metal construction minimizes stem bending and damage.\u003c\/li\u003e\n  \u003cli\u003eSecure, airtight seal reduces slow leaks and maintains pressure.\u003c\/li\u003e\n  \u003cli\u003eSimplifies pump attachment and repeated inflation cycles.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I select and install these tubes for best results?\u003c\/h3\u003e\n\u003cp\u003eChoose the tube size that matches your tire markings (3.25\/3.50-16 or 90\/100-16). Inspect the rim, tire bead, and inside surface for sharp objects before installation, and inflate gradually while checking bead seating. Use proper tire levers and avoid pinching the tube.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eConfirm tire marking 3.25\/3.50-16 (90\/100-16) before purchase.\u003c\/li\u003e\n  \u003cli\u003eInspect rim strip and tire interior for debris or sharp edges.\u003c\/li\u003e\n  \u003cli\u003eInflate slowly and check for leaks after seating the bead.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Riders who maintain 16\" dirt bike wheels and want an affordable, dependable spare or replacement. The GDHSWJ two-pack suits hobbyists, pit crews, and trail riders looking for simple, robust inner tubes that balance flexibility, water resistance, and a durable metal valve stem. These tubes are ideal for routine maintenance, quick roadside repairs, or swapping into a bike used on varied off-road terrain where stable air pressure and reliable valve performance matter.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eProduct features at a glance:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e2-pack of 3.25\/3.50-16 (90\/100-16) inner tubes\u003c\/li\u003e\n  \u003cli\u003e2mm natural rubber for elasticity and shock absorption\u003c\/li\u003e\n  \u003cli\u003eTR4 straight metal valve stem for secure, airtight inflation\u003c\/li\u003e\n  \u003cli\u003eWaterproof construction to reduce air loss\u003c\/li\u003e\n  \u003cli\u003eCompatible with many small dirt bike models and pit bikes\u003c\/li\u003e\n\u003c\/ul\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: Are these tubes compatible with my 90\/100-16 tire?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. These tubes are sized for 3.25\/3.50-16 (90\/100-16) tires and fit most 16\" dirt bike rims.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I replace the valve stem if it gets damaged?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The TR4 metal valve stem is integral to the tube; replace the tube if the stem is damaged for proper seal and safety.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"GDHSWJ","offers":[{"title":"Default Title","offer_id":48087699456158,"sku":"B0FJRZS1Q3","price":38.88,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/gdhswj-front-packaging-2pack.jpg?v=1785929123","url":"https:\/\/northtrailauto.ca\/products\/2-pack-3-25-3-50-16-90-100-16-dirt-bike-inner-tube-tr4","provider":"North Trail Auto","version":"1.0","type":"link"}