20″ Bike Tube 2.125-2.40 AV32mm Schrader Valve

Upgrade your 20-inch bike with this high-quality YunSCM 20" inner tube, engineered for durability and performance. Made from premium butyl rubber, it provides excellent sealing, ozone resistance, and aging resistance—ensuring long-lasting reliability on roads, trails, or city commutes. Whether you're a BMX rider, mountain biker, or city commuter, this tube delivers consistent performance with its Schrader valve (32mm AV) and universal fit for tire widths between 2.125–2.40 inches.

Designed for safety and comfort, this inner tube absorbs road vibrations for a smoother ride while reducing the risk of pinch flats. Ideal for kids’ bikes, junior MTBs, or folding bikes, it’s a must-have spare for quick repairs or upgrades. Pro tip: Add a little air before installation to prevent twisting and ensure proper bead alignment.