Is Fliiiight compatible with mountain bikes and cycle-cross bikes?

Yes, you can use Fliiiight with MTB or CX bikes. 

Note that while you can use a knobby tire with Fliiiight, the tire width should be less than 2" (50 mm). 

Make sure to use our online wheel compatibility checking tool to check for steel pins- they're more common in this type of wheel. 

See also:  

• About wheel compatibility with the Fliiiight
• Is Fliiiight compatible with thru-axles?
• Is Fliiiight compatible with disc brakes?
• What tire sizes work with Fliiiight?