Fat Bike Inner Tube 20x4 Schrader Valve model version_Ultra Beast 2 UART These clips function on bikes

These clips function on bikes with thinner rack tubes - if the clips do not fit on your rack tubes you can use only the straps to ensure a tight

​✔️ ​On-Demand throttle makes pedaling optional

to remove the crank arms off the bottom bracket

The X-actuation cable pull ratio ensures precise indexing with SRAM's 11-speed shifters

Fat Bike Inner Tube 20x4 Schrader Valve model version_Ultra Beast 2 UART These clips function on bikesThis 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.