Industry Nine HYDRA - MTN - RR - CL - 12x148 Axle - Stress Riser Washer KitUpdated Hydra Center Lock mountain rear boost axle with stress riser washer. Not compatible with non-boost/superboost hubs or 6 bolt hubshells.
- Hydra Center Lock mountain rear boost hubshells
In the box
- 1x Boost center lock axle
- 1x Axle washer