the A1 goes where no youth mountain bike helmet has gone before

On the other end of the multi-tool

Weight: M5 • 103g

Easy to tune gears due to wider tolerances

Stan's NoTubes E-Sync Freehub Kit - Shimano Microspline Out of Stock the A1 goes where noDurability, serviceability, and value: every E sync hub is built around these three priorities. From Chromoly steel axles and double row Enduro bearings to special heat treated steel ratchet rings and a pawl design that reduces stress on freehub and bearings, every detail of the E sync hub is designed for durability. E sync hubs are also designed for fast engagement, with four pawls needing only 8. 18 of rotation to engage simultaneously and put power