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Keep your fat bike rolling smoothly with the Chaoyang 20×4.0 / 4.90T inner tube. Built for wide 20-inch wheels, this heavy-duty tube is designed to handle the extra volume and demands of fat bike tyres, whether you’re riding on trails, sand, or snow.
Key Features
Size: 20 × 4.0 / 4.90T – fits a wide range of fat bike tyres
Durable construction: thick rubber compound resists punctures and pinch flats
Reliable performance: holds air consistently, even at low pressures for off-road riding
Valve type: (specify Schrader or Presta if known)
Easy installation: flexible rubber makes fitting simple and secure
Perfect as a replacement or spare, the Chaoyang 20×4.0 / 4.90T tube offers the strength and reliability fat bike riders need for every adventure.
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