Fat Bike Inner Tube 20x4 Schrader Valve model version_Challenger 1 while the siped transition knobs

while the siped transition knobs and shoulder blocks provide exceptional grip in diverse trail conditions

Designed for long rides in the wettest

A high-quality design and many power options provide reliable power and range to extend your ride

designed to maximize your carrying capacity by an impressive 30-40 liters

Illuminate your path with an impressive 2000 lumens

Fat Bike Inner Tube 20x4 Schrader Valve model version_Challenger 1 while the siped transition knobsThis is a single 20x4 bicycle inner tube with a Schrader valve. Compatible with all Biktrix electric bikes equipped with 20x4 fat eBike tires. Have a spare handy and ready to replace your existing inner tube as it wears or fails.