Sea Otter Classic gallery: 3D-printed custom helmets, a hub that turns a 1x into a 2x, new Stages Dash, and more

From the in-process to the fully formulated, Sea Otter shows off a variety of bike gear.

Day three of Sea Otter Classic brought the biggest crowds thus far to the Laguna Seca Raceway outside Monterey, California. New gear highlights to be found in the massive infield expo included the Classified planetary hub that effectively turns a single-ring bike into a double-ring bike with a 30 percent change in gearing with the push of a Bluetooth button shaped like a sprint shifter.

Another hard-to-miss thing was a six-foot-wide helmet — used to promote the made-to-measure 3D-printed helmets from the brand Kav.

Check out the gallery below for a closer look for some of the most interesting gear from Sea Otter.

Check back all through the weekend for full coverage from the Sea Otter Classic, including the first race of the Life Time Grand Prix on Saturday.