{"product_id":"ar-pro-motorcycle-inner-tubes-2-pack-110-90-19-120-90-19-tr4-valve-1-6mm-natural-rubber-pinch-resistant","title":"AR-PRO Motorcycle Inner Tubes 2-Pack 110\/90-19–120\/90-19 TR4 Valve, 1.6mm Natural Rubber, Pinch-Resistant","description":"\u003cp\u003e\u003cstrong\u003eAR-PRO 2-pack inner tubes for 19\" rims provide durable natural-rubber protection for 110\/90–120\/90 off-road and motocross tires with TR4 valve stems.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese AR-PRO inner tubes are made from standard 1.6mm natural rubber, designed to fit tires 110\/90-19 (4.50 x 19\") through 120\/90-19 (4.72 x 19\") and supplied in a two-piece pack. Built to resist pinching, twisting, and common trail punctures, each tube uses a vulcanized TR4 valve stem that’s compatible with most pumps. The construction emphasizes flexibility and abrasion resistance to perform reliably on dirt-bike, off-road, and motocross rims.\u003c\/p\u003e\n\n\u003ch3\u003eHow do these tubes fit my 19\" dirt bike tire?\u003c\/h3\u003e\n\u003cp\u003eAR-PRO tubes are sized to accommodate a narrow range of widths across a 19-inch rim, covering 110 mm (4.50\") up to 120 mm (4.72\"). The elastic natural rubber material allows a secure, conforming fit inside intended tire sizes without excess folds that cause pinch flats.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits rim diameter: 19 inches\u003c\/li\u003e\n  \u003cli\u003eRecommended tire widths: 110\/90-19 and 120\/90-19\u003c\/li\u003e\n  \u003cli\u003eTwo tubes included per pack for quick replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat makes the AR-PRO tubes resistant to pinches and punctures?\u003c\/h3\u003e\n\u003cp\u003eThe tubes use 1.6mm standard-thickness natural rubber, which balances flexibility with durability. The rubbers’ abrasion resistance and even molding reduce weak spots that typically lead to pinches, while the vulcanized valve base helps prevent splits and twisting near the stem.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e1.6mm natural rubber for impact and abrasion tolerance\u003c\/li\u003e\n  \u003cli\u003eEvenly molded walls to minimize pinching during installation\u003c\/li\u003e\n  \u003cli\u003eReinforced valve base to reduce stem-related failures\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre the TR4 valve stems compatible with my pump and easy to service?\u003c\/h3\u003e\n\u003cp\u003eYes—these tubes come with standard TR4 valve stems: short, straight, and threaded for broad pump compatibility. The trunks are vulcanized into the tube for a secure seal, and the standard threading accepts common caps, cores, and pump attachments for roadside repairs.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTR4 valves: short, straight, threaded\u003c\/li\u003e\n  \u003cli\u003eVulcanized seating prevents leakage and stem rotation\u003c\/li\u003e\n  \u003cli\u003eWorks with most hand pumps, inflators, and valve cores\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do these tubes perform on rough off-road or motocross tracks?\u003c\/h3\u003e\n\u003cp\u003eAR-PRO inner tubes are engineered for the stresses of off-road riding where repeated impacts, rocks, and roots are common. The natural rubber maintains flexibility in varied temperatures and resists permanent distortion from repeated use, making them a cost-effective replacement option for trail and competition use.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDesigned specifically for dirt-bike and motocross conditions\u003c\/li\u003e\n  \u003cli\u003eNatural rubber reduces permanent deformation from repeated impacts\u003c\/li\u003e\n  \u003cli\u003eTwo-tube pack means faster turnaround between sessions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Riders who need reliable, affordable replacement inner tubes for 19\" dirt-bike rims—whether weekend trail riders, amateur motocross competitors, or off-road commuters—will find AR-PRO’s two-pack a practical option. These tubes suit anyone who values easy pump compatibility, a secure valve seal, and a tougher natural-rubber construction that stands up to typical trail hazards without adding unnecessary weight or complexity.\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: Will these tubes fit a 4.50 x 19 rim?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The AR-PRO tubes are sized for 110\/90-19 (4.50 x 19\") through 120\/90-19 tires on 19\" rims.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use a standard hand pump with the TR4 valves?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. TR4 valve stems are threaded and compatible with most hand pumps and common inflators.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"AR-PRO","offers":[{"title":"Default Title","offer_id":55165552689495,"sku":"B09TT4DCMB","price":49.3,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/ar-pro-front-packaging-view_b4eac8b9-5cde-4215-b085-586555bebb06.jpg?v=1790355460","url":"https:\/\/britishgarage.co.uk\/products\/ar-pro-motorcycle-inner-tubes-2-pack-110-90-19-120-90-19-tr4-valve-1-6mm-natural-rubber-pinch-resistant","provider":"British Garage","version":"1.0","type":"link"}