{"product_id":"meroca-tpu-inner-tube-16-20-inch-folding-bike-349-406-451-presta-valve","title":"MEROCA TPU Inner Tube 16\/20\" Folding Bike 349\/406\/451 Presta","description":"\n\u003ch2\u003eMEROCA Ultralight TPU Inner Tube for 16 \u0026amp; 20 Inch Folding Bikes\u003c\/h2\u003e\n\u003cp\u003eUpgrade your folding bike with the \u003cstrong\u003eMEROCA TPU Inner Tube\u003c\/strong\u003e — engineered for riders who demand less weight, better performance, and reliable air retention on every ride. Compatible with 349, 406, and 451 rim sizes and available with 45mm or 65mm Presta (French) valves to fit a wide range of rim heights.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Choose a TPU Inner Tube?\u003c\/h3\u003e\n\u003cp\u003eTraditional rubber tubes are heavy and bulky. MEROCA's TPU (Thermoplastic Polyurethane) inner tube weighs just \u003cstrong\u003e~22g\u003c\/strong\u003e — dramatically lighter than conventional options — while delivering superior puncture resistance, high elasticity, and excellent temperature tolerance in both hot and cold conditions. The result? Snappier acceleration, easier climbing, and more responsive handling.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUltralight Design (~22g):\u003c\/strong\u003e Reduces rotational weight for faster acceleration and improved climbing performance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTPU Puncture Resistance:\u003c\/strong\u003e High-elongation TPU material offers enhanced scratch, wear, and puncture protection compared to standard rubber tubes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExcellent Air Tightness:\u003c\/strong\u003e Precision-engineered valve stem design ensures superior valve core matching and long-lasting air retention — fewer top-ups, more riding.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOne-Piece Construction:\u003c\/strong\u003e No long seams along the tube body — only one joint ring at the valve area — minimizing air leakage risk.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Valve Lengths (45mm \/ 65mm):\u003c\/strong\u003e Compatible with most rim depths, from standard to deep-section rims.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Portable:\u003c\/strong\u003e Volume reduced by nearly 70% vs. traditional rubber tubes — fits easily in a jersey pocket or saddlebag as a spare.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEco-Friendly Material:\u003c\/strong\u003e TPU is more environmentally responsible than conventional rubber compounds.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMEROCA\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTPU (Thermoplastic Polyurethane)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e16\" \u0026amp; 20\" (349 \/ 406 \/ 451)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eValve Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePresta (French Valve)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eValve Length Options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e45mm \/ 65mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 22g\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBianchi Green\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in Mainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003e⚠️ Important Installation Notice\u003c\/h3\u003e\n\u003cp\u003eDo \u003cstrong\u003eNOT\u003c\/strong\u003e over-inflate the inner tube before placing it inside the tire — this can cause irreversible damage. Inflate only slightly during installation and \u003cstrong\u003enever exceed 6 PSI\u003c\/strong\u003e during fitting. Ensure the tube sits snugly against the tire wall and adjust by pressing before fully inflating to riding pressure.\u003c\/p\u003e\n\n\u003ch3\u003eYou May Also Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1pc-10g-high-grade-silicon-grease-lubricant-o-lubrication-good-odorless-smoothness-for-o-rings-tube-silicone-grease-lubricant\"\u003e1PC 10g High Grade Silicone Grease Lubricant – Great for Valve Maintenance\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1pc-sheath-fold-knife-plier-bag-pouch-case-sheath-belt-loop-pocket-carry-storage-flashlight-holder-waist-pack\"\u003e1PC Sheath Fold Knife \u0026amp; Tool Carry Pouch – Handy for Cycling Toolkit Storage\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/2m-light-stand-folding-telescoping-tripod-adjustable-photography-floor-lamp-holder-tripod-for-outdoor-picnics-camping-hiking\"\u003e2m Folding Telescoping Tripod – Great for Outdoor \u0026amp; Cycling Adventures\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/health.gov\/moveyourway\" target=\"_blank\" rel=\"noopener\"\u003eHHS Move Your Way physical activity guidance\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What bike sizes is the MEROCA TPU inner tube compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: The MEROCA TPU inner tube is designed for 16-inch and 20-inch folding bicycles with rim sizes 349, 406, and 451. It is available with either a 45mm or 65mm Presta valve to suit different rim depths.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How does a TPU inner tube compare to a standard rubber tube?\u003c\/h4\u003e\n\u003cp\u003eA: TPU inner tubes like the MEROCA are significantly lighter (approx. 22g vs. 80–120g for rubber), offer better puncture resistance, superior air retention, and pack down to nearly 70% less volume — making them ideal for folding bike riders who want performance and portability.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is the maximum inflation pressure during installation?\u003c\/h4\u003e\n\u003cp\u003eA: During installation into the tire, never exceed 6 PSI. Over-inflation before the tube is fully seated inside the tire can cause permanent damage. Once correctly installed, inflate to your normal riding pressure as indicated on your tire sidewall.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is the Presta valve compatible with standard bike pumps?\u003c\/h4\u003e\n\u003cp\u003eA: Yes — most modern floor pumps and hand pumps include a Presta (French) valve head. If your pump only has a Schrader head, a simple Presta adapter (sold separately) will allow you to inflate the tube with ease.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What bike sizes is the MEROCA TPU inner tube compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The MEROCA TPU inner tube is designed for 16-inch and 20-inch folding bicycles with rim sizes 349, 406, and 451. 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