The Hydra drive mechanism was engineered so that servicing the product is accessible and intuitive. Hydra service is performed with basic tools readily available to the home or shop mechanic - no proprietary tools are required.

Loud and proud? Or stealthy quiet? With either Dumonde Tech freehub oil (louder) or Dumonde Tech Pro-X freehub grease (quieter), you are able to tune in your hub! Check out the comparison between Hydra and Torch as well as oil vs grease here!

Industry Nine products are designed to keep you in the saddle and out of the service queue. Regular service and maintenance is simple and can be performed with basic tools readily available to the home or shop mechanic - no proprietary tools are required. To properly service your Industry Nine Hydra series hubs, please follow the reference guides and videos here.