MEROCA TPU Inner Tube 16/20" Folding Bike 349/406/451 Presta

MEROCA Ultralight TPU Inner Tube for 16 & 20 Inch Folding Bikes

Upgrade your folding bike with the MEROCA TPU Inner Tube — 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.

Why Choose a TPU Inner Tube?

Traditional rubber tubes are heavy and bulky. MEROCA's TPU (Thermoplastic Polyurethane) inner tube weighs just ~22g — 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.

Key Features

• Ultralight Design (~22g): Reduces rotational weight for faster acceleration and improved climbing performance.
• TPU Puncture Resistance: High-elongation TPU material offers enhanced scratch, wear, and puncture protection compared to standard rubber tubes.
• Excellent Air Tightness: Precision-engineered valve stem design ensures superior valve core matching and long-lasting air retention — fewer top-ups, more riding.
• One-Piece Construction: No long seams along the tube body — only one joint ring at the valve area — minimizing air leakage risk.
• Dual Valve Lengths (45mm / 65mm): Compatible with most rim depths, from standard to deep-section rims.
• Compact & Portable: Volume reduced by nearly 70% vs. traditional rubber tubes — fits easily in a jersey pocket or saddlebag as a spare.
• Eco-Friendly Material: TPU is more environmentally responsible than conventional rubber compounds.

Specifications

⚠️ Important Installation Notice

Do NOT over-inflate the inner tube before placing it inside the tire — this can cause irreversible damage. Inflate only slightly during installation and never exceed 6 PSI during fitting. Ensure the tube sits snugly against the tire wall and adjust by pressing before fully inflating to riding pressure.

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Frequently Asked Questions

Q: What bike sizes is the MEROCA TPU inner tube compatible with?

A: 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.

Q: How does a TPU inner tube compare to a standard rubber tube?

A: 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.

Q: What is the maximum inflation pressure during installation?

A: 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.

Q: Is the Presta valve compatible with standard bike pumps?

A: 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.

Production & Packaging Notice

To 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.