{"product_id":"ar-pro-inner-tubes-110-100-18-4-50x18-2-pack-tr4-valve-1-6mm-natural-rubber","title":"AR-PRO Inner Tubes 110\/100-18 (4.50x18) 2-Pack — TR4 Valve, 1.6mm Natural Rubber","description":"\u003cp\u003e\u003cstrong\u003eThese AR-PRO 110\/100-18 (4.50 x 18) inner tubes are a two-pack of natural rubber, TR4-valve tubes built to resist pinches and punctures for off-road and motocross use.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eRiders who need dependable replacement inner tubes for 18-inch dirt bike wheels will find this two-pack designed specifically for 110\/100-18 (4.50 x 18) tires. Made from standard 1.6mm natural rubber and fitted with TR4 straight threaded valve stems, these tubes strike a balance between flexibility and durability so they flex with the tire and stand up to rough terrain. The set includes two tubes, each vulcanized around the valve to enhance seal integrity and reduce twisting or splitting near the stem.\u003c\/p\u003e\n\n\u003ch3\u003eHow will these tubes hold up on rocky or root-filled trails?\u003c\/h3\u003e\n\u003cp\u003eThe tubes use natural rubber with a standard 1.6mm wall thickness that delivers abrasion resistance and puncture tolerance while remaining pliable. Their even molding and resilient material help prevent sudden failures from pinching against the rim or slicing from sharp objects.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNatural rubber compound resists permanent distortion\u003c\/li\u003e\n  \u003cli\u003e1.6mm thickness balances flexibility with toughness\u003c\/li\u003e\n  \u003cli\u003eEven molding reduces pinch points during impacts\u003c\/li\u003e\n  \u003cli\u003eHigh puncture resistance for rough off-road conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre the valve stems compatible with common pumps and repair gear?\u003c\/h3\u003e\n\u003cp\u003eEach tube is equipped with a TR4 valve stem — a short, straight, threaded stem that fits most hand and track pumps as well as standard valve tools. TR4 is a widely used motorcycle tube valve, so replacing cores or seating the stem is straightforward.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTR4 threaded stems work with common pump heads and valve tools\u003c\/li\u003e\n  \u003cli\u003eVulcanized valve base reduces twisting and air leaks\u003c\/li\u003e\n  \u003cli\u003eShort, straight design simplifies inflation and core replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill these tubes fit my dirt bike and how many tubes are included?\u003c\/h3\u003e\n\u003cp\u003eThe tubes are sized for tires that list 110\/100-18 or the equivalent 4.50 x 18. This listing includes two inner tubes, making it convenient for owners who replace both tires or keep a spare on hand for trail repairs.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCorrect fit for 110 mm width, 18-inch rim diameter (4.50 x 18)\u003c\/li\u003e\n  \u003cli\u003eTwo tubes per pack for front and rear or a spare\u003c\/li\u003e\n  \u003cli\u003eClear sizing reduces installation errors\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do these tubes help reduce dangerous pinch flats?\u003c\/h3\u003e\n\u003cp\u003eThe combination of proper wall thickness, consistent molding, and flexible natural rubber reduces the risk of pinching between tire and rim during impacts. That lowers the chance of sudden, explosive failures and improves ride safety on motocross tracks and trails.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFlexible rubber cushions impacts, reducing pinch flat likelihood\u003c\/li\u003e\n  \u003cli\u003eEvenly molded walls limit weak spots that lead to splits\u003c\/li\u003e\n  \u003cli\u003eVulcanized valve seating reduces stress points around the stem\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: These AR-PRO tubes are intended for off-road and motocross riders, dirt bike mechanics, and weekend trail riders who need reliable, OEM-style inner tubes for 18-inch rims. If you want a cost-effective pair of replacement tubes that work with standard pumps and offer improved resistance to pinching and punctures, this two-pack is a practical addition to your maintenance kit or spares bag.\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 both 110\/100-18 and 4.50 x 18 tires?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. 110\/100-18 and 4.50 x 18 describe the same tire size; these tubes fit that width and 18-inch rim diameter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are the valves compatible with standard hand pumps?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The TR4 threaded valve stems are compatible with most hand pumps and standard valve tools.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"AR-PRO","offers":[{"title":"Default Title","offer_id":55164537897303,"sku":"B09TT1C8FB","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-110-100-18.jpg?v=1790353418","url":"https:\/\/britishgarage.co.uk\/products\/ar-pro-inner-tubes-110-100-18-4-50x18-2-pack-tr4-valve-1-6mm-natural-rubber","provider":"British Garage","version":"1.0","type":"link"}