This 20” bike inner tube fits all 20 x 4.0 Fat tires bike(Please kindly confirm that your bike tire size before you buy). Our bike inner tubes are made of butyl rubber material. Better air tightness, heat resistance, and durable. Suitable for most of Ebike bicycles wheels. Valve Type: 40mm Schrader Valve. Appliaction: 20×4.0 fat tire tube ideal choice for daily spare replacement for fat bicycles, electric bicycles, snow bikes, wide body mountain bikes, and beach tricycles. Convenient Inflation: 20×4.0 fat tire tube equipped with a 40mm Schrader Valve for convenient inflation. Material: Crafted from butyl rubber for superior air tightness, durability, and shock absorption, ensuring smooth rides without discomfort. Enhanced Durability: Strong wear resistance and thicker design compared to other fat tire electric bike inner tube, built to withstand heavy usage without breaking or deforming. Protective cover on the inflation port minimizes air leakage. Installation: 20″x4.0” bicycle heavy duty replacement inner tube for easy installation and removal. Check the valve position to ensure that the installation direction is correct.
