Kenda Tube - 20 x 3.5-4.5 | 35mm Schrader Valve

What Makes the Kenda Tube 20 x 3.5-4.5 Ideal for Fat Bikes?

The Kenda Tube 20 x 3.5-4.5 with 35mm Schrader valve is built specifically for 20-inch fat tire bikes, covering the widest tire sizes in this wheel diameter. Running a tube in a fat bike setup demands a casing that can expand uniformly across a wide footprint, and Kenda's fat and plus-size butyl tube construction is engineered to do exactly that without thin spots or uneven stretch. The size range spans 3.5 to 4.5 inches wide, which covers essentially every fat tire produced for 20-inch wheels.

The 35mm Schrader valve stem is long enough to clear standard fat bike rim walls while still working with any traditional floor pump or compressor. This tube is a practical spare to keep on hand for kids' fat bikes, beach cruiser-style fat builds, and any 20-inch fat-tire platform. Whether you're buying it to replace a flat or stashing one in your kit as a backup, it's a straightforward solution for a relatively specialized size.