Is the included trainer skewer compatible with a thru-axle? September 12, 2019 21:03 Updated No. If your bike has a thru-axle, you'll need a thru-axle adapter in order to use the trainer. You can purchase one from the Robert Axle Project. Related articles What are the dimensions of the included trainer skewer? Is it compatible with my bike? Can I transmit data to my apps or devices using the included USB-C cable? Fliiiight User Manual Is using my Heart Rate Monitor with Fliiiight recommended? Upgrading to Fliiiight FAQ Comments 0 comments Please sign in to leave a comment.