{"product_id":"gdhswj-110-90-19-4-50x19-heavy-duty-inner-tubes-2-pack-3mm-butyl-tr4-straight-valve-for-dirt-bikes","title":"GDHSWJ 110\/90-19 (4.50x19) Heavy-Duty Inner Tubes 2-Pack — 3mm Butyl, TR4 Straight Valve for Dirt Bikes","description":"\u003cstrong\u003eGDHSWJ 110\/90-19 inner tubes are heavy-duty 3mm butyl rubber tubes with TR4 straight valve stems made to fit 4.50 x 19 off-road motorcycle tires and withstand rough terrain.\u003c\/strong\u003e\n\n\u003cp\u003eThese two inner tubes are engineered for dirt bikes, motocross and off-road motorcycles that use 19-inch rims and tire widths around 110–120 mm (4.50–4.72 inches). Made from thicker-than-standard 3mm butyl rubber, they prioritize puncture resistance, airtightness and durability while keeping compatibility with common pumps through the TR4 straight valve. The pack contains two identical tubes so you can replace both sides or keep a spare on hand.\u003c\/p\u003e\n\n\u003ch3\u003eHow do these tubes improve puncture and pinch protection?\u003c\/h3\u003e\n\u003cp\u003eThe 3mm butyl compound and seamless molding reduce the chance of pinching and increase resistance to sharp impacts compared with thinner tubes. Thicker walls absorb shocks and slow down the progression of small punctures, giving you more time to repair or reach a service point.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e3mm butyl rubber for improved tear and puncture resistance\u003c\/li\u003e\n  \u003cli\u003eSeamless construction minimizes weak points and air leaks\u003c\/li\u003e\n  \u003cli\u003eReinforced valve base to prevent splitting under load\u003c\/li\u003e\n  \u003cli\u003eEven molding reduces pinch flats when installing on wide rims\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill these fit my motorcycle and pump?\u003c\/h3\u003e\n\u003cp\u003eThese tubes are sized for 110\/90-19 (nominally 4.50 x 19) tires and will also accommodate tires up to about 120 mm (4.72 inches) wide on 19-inch rims. They come with TR4 straight valve stems, compatible with most hand and electric pumps that accept straight TR-type valves.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits 19-inch rims with tire widths near 110–120 mm\u003c\/li\u003e\n  \u003cli\u003eTR4 straight valve stem compatible with standard pump heads\u003c\/li\u003e\n  \u003cli\u003eVulcanized valve for a secure, airtight bond\u003c\/li\u003e\n  \u003cli\u003eTwo tubes per pack for spare or dual replacements\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do these tubes perform on off-road and motocross tracks?\u003c\/h3\u003e\n\u003cp\u003eDesigned for rough use, the thicker butyl and seamless design damp vibration and resist abrasion from rocks, roots and track debris. They provide consistent pressure retention so handling stays predictable over long rides and varied terrain.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eThicker walls cushion impacts and reduce vibration\u003c\/li\u003e\n  \u003cli\u003eAirtight properties maintain stable tire pressure on long runs\u003c\/li\u003e\n  \u003cli\u003eDurable valve integration holds up under repeated inflation cycles\u003c\/li\u003e\n  \u003cli\u003eResistant to twisting and splitting during off-road use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I expect during installation and maintenance?\u003c\/h3\u003e\n\u003cp\u003eInstallation follows standard inner tube mounting: partially inflate, seat inside the tire, then fully inflate to recommended pressure. Because these tubes are heavier, take care to avoid pinching between rim and tire bead during seating and use proper lubrication for easier installation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePartially inflate before placing inside the tire to prevent pinches\u003c\/li\u003e\n  \u003cli\u003eUse soap or tire lubricant to ease bead seating\u003c\/li\u003e\n  \u003cli\u003eCheck valve tightness and inspect for damage after first ride\u003c\/li\u003e\n  \u003cli\u003eKeep one tube as a spare for trail-side repairs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Riders who demand durable, reliable inner tubes for off-road, dirt bike or motocross use will benefit from this GDHSWJ two-pack. These tubes suit weekend trail riders, racers who want a tougher backup option, and any motorcyclist using 19-inch wheels with ~110–120 mm tires who prefers the simplicity of replaceable inner tubes over tubeless conversions.\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: Do these tubes fit 4.50 x 19 tires?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. They are sized for 110\/90-19 (4.50 x 19) and fit similar 19-inch tires up to about 120 mm wide.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are the valve stems compatible with standard pumps?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. Each tube uses a TR4 straight valve stem compatible with most hand and electric pumps.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"GDHSWJ","offers":[{"title":"Default Title","offer_id":48085554888862,"sku":"B0CB3FY2R8","price":38.73,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/gdhswj-front-view-packaging_bf781b6e-d10a-4260-b3ee-c2cbb66e3dda.jpg?v=1785873052","url":"https:\/\/northtrailauto.ca\/products\/gdhswj-110-90-19-4-50x19-heavy-duty-inner-tubes-2-pack-3mm-butyl-tr4-straight-valve-for-dirt-bikes","provider":"North Trail Auto","version":"1.0","type":"link"}