{"product_id":"bibike-tpu-road-inner-tubes-700x18-32c-45-65-85mm-metal-presta-valve-removable-core-ultra-light-36g","title":"Bibike TPU road inner tubes 700x18-32c — 45\/65\/85mm Metal Presta valve, removable core, ultra-light 36g","description":"\u003cp\u003e\u003cstrong\u003eBibike TPU inner tubes are ultra-light, durable road bike tubes for 700x18–32c tires with metal Presta valves (45\/65\/85mm) and removable cores.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt from thermoplastic polyurethane (TPU), these Bibike inner tubes trade traditional butyl rubber weight for a featherlight 36 g construction and improved puncture resistance for many road cycling setups. Metal Presta valves replace plastic stems for better sealing and corrosion resistance, and removable cores make pumping, tubeless conversions, and CO2 inflation simpler. Choose from 45mm, 65mm, or 85mm valve lengths to match deep rims, and follow the included inflation guidance to avoid overstretching the tube when unmounted.\u003c\/p\u003e\n\n\u003ch3\u003eHow do these tubes improve my road bike performance?\u003c\/h3\u003e\n\u003cp\u003eLower rotational weight helps acceleration and responsiveness, especially noticeable on climbs and sprints. The TPU material balances toughness and lightness so you get a lively ride without sacrificing durability compared with some ultra-thin alternatives.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWeighs approximately 36 g for reduced rotational mass.\u003c\/li\u003e\n  \u003cli\u003eTPU offers a resilient, flexible wall suitable for road conditions.\u003c\/li\u003e\n  \u003cli\u003eMetal Presta valve improves air seal and resists corrosion.\u003c\/li\u003e\n  \u003cli\u003eRemovable valve core simplifies inflation and sealant use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill these tubes fit my tires and rims?\u003c\/h3\u003e\n\u003cp\u003eThese inner tubes cover tires sized 700x18c through 700x32c, matching common road and gravel-adjacent widths. Pick the valve length that aligns with your rim depth to make inflation easier and avoid valve stress.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with 700x18, 23, 25, 28, 32c tire sizes.\u003c\/li\u003e\n  \u003cli\u003eValve length options: 45 mm for shallow rims, 65 mm for medium, 85 mm for deep-section rims.\u003c\/li\u003e\n  \u003cli\u003eRemovable core supports both pump and CO2 inflator use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre there special handling or inflation steps I should follow?\u003c\/h3\u003e\n\u003cp\u003eTPU behaves differently when unmounted; avoid overinflating the tube outside the tire. Start with a low pressure during installation so the tube seats against the tire wall, then finish to your normal riding pressure once the tire is mounted.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eInitial installation: inflate to about 0.5 PSI to help seat the tube inside the tire.\u003c\/li\u003e\n  \u003cli\u003eDo not exceed 5 PSI when the tube is not installed to prevent irreversible overstretching.\u003c\/li\u003e\n  \u003cli\u003eAfter mounting, inflate to your usual riding pressure appropriate for tire width and rider weight.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the metal Presta valve with removable core help me on the road?\u003c\/h3\u003e\n\u003cp\u003eMetal valves are stiffer and seal better than plastic stems, reducing the chance of leaks and valve damage. The removable core lets you attach sealant, use CO2 cartridges, or thread a pump adaptor without removing the valve stem from the rim.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMetal stem offers better airtightness and durability than plastic stems.\u003c\/li\u003e\n  \u003cli\u003eRemovable core enables fast CO2 inflation and sealant introduction.\u003c\/li\u003e\n  \u003cli\u003eAvailable in three lengths to suit shallow and deep rims alike.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: These Bibike TPU inner tubes suit road cyclists who want to cut weight and improve ride feel without sacrificing practicality. They are ideal for racers, weekend riders, and cyclists fitting deep-section wheels who need longer valve lengths. If you frequently use CO2 inflators, tubeless setups requiring removable cores, or simply want a lighter spare tube to carry on long rides, these tubes provide a performance-minded option. Riders who prefer maximum puncture protection from thicker butyl, or who want to inflate tubes to high pressures while unmounted, may prefer conventional tubes instead.\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: What valve length should I choose for deep-section rims?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Choose 85mm for deep rims, 65mm for mid-depth rims, and 45mm for shallow rims.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use CO2 cartridges with these tubes?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — the removable Presta valve core allows fast CO2 inflation and adding sealant.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Bibike","offers":[{"title":"Default Title","offer_id":59359433326940,"sku":"B0DZ5S1LND","price":68.56,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/5604\/9244\/files\/bibike-front-packaging-700x18-32c_d954e159-14b2-4eda-89b6-49ac016469c6.jpg?v=1791197958","url":"https:\/\/sportium.co.uk\/products\/bibike-tpu-road-inner-tubes-700x18-32c-45-65-85mm-metal-presta-valve-removable-core-ultra-light-36g","provider":"Sportium Sports And Outdoors","version":"1.0","type":"link"}