{"product_id":"tusk-ultra-heavy-duty-motorcycle-inner-tube-110-90x19-120-90x19-4mm-reinforced-butyl-tr-4-valve","title":"TUSK Ultra Heavy Duty Motorcycle Inner Tube 110\/90x19 \u0026 120\/90x19 — 4mm Reinforced Butyl, TR‑4 Valve","description":"\u003cp\u003e\u003cstrong\u003eThe Tusk Ultra Heavy Duty 4mm motorcycle inner tube is an extra-thick, reinforced butyl tube in sizes 110\/90x19 and 120\/90x19 built to resist punctures and repeated abuse on rough terrain.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned for riders who push their bikes off-road, this tube upgrades standard OEM rubber with a 4 mm wall thickness and a TR‑4 valve stem for reliable inflation. Constructed from high-quality butyl rubber, the Tusk Ultra Heavy Duty tube focuses on durability and long service life while keeping installation straightforward. Compatible with a range of bikes (including KTM 250 SX-F 2016–2024 when used with correct rim and tire combinations), it helps reduce flats without adding excessive weight or sacrificing fitment.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the 4 mm thickness affect puncture resistance and ride feel?\u003c\/h3\u003e\n\u003cp\u003eThe thicker 4 mm construction significantly increases resistance to pinch flats, thorns and sharp rocks compared with standard tubes. You’ll feel a modest increase in rolling resistance, but most riders find the trade-off acceptable for far fewer repairs and a more dependable ride on rough trails.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e4 mm wall for improved puncture protection\u003c\/li\u003e\n  \u003cli\u003eHigh-quality butyl for consistent air retention\u003c\/li\u003e\n  \u003cli\u003eAcceptable trade-off: slightly heavier with more durability\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this tube fit my wheel—what sizes and bikes are supported?\u003c\/h3\u003e\n\u003cp\u003eThe Tusk Ultra Heavy Duty is offered to fit 110\/90x19 and 120\/90x19 tire sizes, making it suitable for many 19\" front and rear applications. It’s listed as compatible with KTM 250 SX‑F (2016–2024) and other makes; always check your tire width, rim diameter and fitment guide image to confirm proper selection.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAvailable in 110\/90x19 and 120\/90x19 sizes\u003c\/li\u003e\n  \u003cli\u003eWorks on many off-road and dual‑sport 19\" rims\u003c\/li\u003e\n  \u003cli\u003eRefer to fitment guide image for model-specific compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat valve type and installation details should I expect?\u003c\/h3\u003e\n\u003cp\u003eThis inner tube features a TR‑4 (rubber-stem) valve suitable for most tubed motorcycle rims and standard valve cores. Installation follows normal inner-tube procedures—partially inflate to seat the tube, align the valve in the rim, then fully inflate to recommended pressures while checking bead seating.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTR‑4 rubber valve stem for standard tubed wheels\u003c\/li\u003e\n  \u003cli\u003ePre-install partial inflation recommended to avoid pinching\u003c\/li\u003e\n  \u003cli\u003eInspect tire and rim for sharp edges before fitting\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow long will a reinforced butyl tube last under regular off-road use?\u003c\/h3\u003e\n\u003cp\u003eLongevity depends on terrain, riding style and maintenance, but reinforced butyl tubes typically outlast standard tubes when exposed to rocks, branches and repeated impacts. Replacing a tube before it becomes brittle and restoring proper tire pressure will maximize its service life.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eButyl compound resists air loss over time\u003c\/li\u003e\n  \u003cli\u003e4 mm thickness reduces puncture frequency in rough terrain\u003c\/li\u003e\n  \u003cli\u003eRegular inspection and pressure checks extend lifespan\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: The Tusk Ultra Heavy Duty 4 mm inner tube is aimed at off-road and enduro riders, trail advocates and anyone who frequently faces sharp, rocky or thorny conditions that cause recurring flats. If you want a straightforward upgrade from stock tubes for fewer roadside repairs and more confidence on aggressive trails, this reinforced butyl tube in 110\/90x19 or 120\/90x19 sizes is a practical, plug-and-play solution.\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: Can the Tusk 4mm tube be used on KTM 250 SX‑F models?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—this tube fits KTM 250 SX‑F 2016–2024 when matched to the correct 19\" rim and tire sizes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the thicker tube make a big difference in weight or speed?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It adds modest weight and slight rolling resistance, but greatly reduces punctures for off‑road reliability.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"TUSK","offers":[{"title":"Default Title","offer_id":48085629370526,"sku":"B0CSPLY9BP","price":49.34,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/tusk-front-packaging-110-90x19.jpg?v=1785875415","url":"https:\/\/northtrailauto.ca\/products\/tusk-ultra-heavy-duty-motorcycle-inner-tube-110-90x19-120-90x19-4mm-reinforced-butyl-tr-4-valve","provider":"North Trail Auto","version":"1.0","type":"link"}