26x4 Heavy-Duty Fat Tire Tube

* Military-Grade Butyl Rubber: These heavy-duty bike tubes are designed with variable thicknesses to keep weight down while providing optimal strength where it's needed. For durability and resilience. * Fat Tire Bike: Bakcou's ultra-grade, heavy-duty bike tubes are engineered for fat tire bikes. Whether you ride an electric fat tire bike or a traditional one, enjoy a worry-free cycling experience. * Thickness Design: The heavy thickness (3.5mm) of the rubber at the base of the fat bike tire gradually tapers up to a lighter-weight thickness (1.8mm). Protect against punctures and other damage. * Schrader Valve: Each bike tube is equipped with an easy-to-inflate Schrader Valve, allowing for straightforward inflation. This feature ensures optimal tire pressure for a smooth and safe ride. * Durable Compatibility with Electric Mountain Bikes: Engineered to be the most durable fat tire bike tubes on the market, these heavy-duty tubes are specifically designed for electric mountain bikes with 26, 24, 20 x 4.0 fat bike tires.