A thru-axle on a bicycle is a specific type of axle that provides a secure and rigid connection between the wheel and the frame or fork.
How a Thru-Axle Works
According to the reference provided, the functionality of a thru-axle is described as follows:
- It bolts through your frame.
- Then through your wheel.
- And then threads directly into the other side of your frame.
Essentially, the thru-axle is a sturdy bolt that passes completely through the hub of the wheel and the corresponding openings in the bicycle's fork (for the front wheel) or frame (for the rear wheel). It then threads into the fork or frame on the opposite side, creating a strong, integrated system. This method differs from traditional quick-release skewers, which clamp the wheel ends against open dropouts.
By bolting and threading directly into the frame/fork, the thru-axle enhances the stiffness and security of the wheel connection, contributing to improved handling, braking performance (especially with disc brakes), and precise wheel alignment.
