The Industry Nine Hydra MTN Full Bearing Kit Centerlock is a Hydra MTN Full Bearing Kit for Centerlock hub (HKMB21) CNC-machined by Industry Nine at their Asheville, North Carolina facility. The brand’s signature Hydra hubs deliver 690 points of engagement, the fastest hub engagement on the market, with the precision and bearing quality to back it up.
Use it as a permanent upgrade for OEM bike parts where engagement speed, machining tolerances, and American-made quality matter. Industry Nine is the brand serious mountain bikers and gravel riders specify by name on custom builds.
Industry Nine has been CNC-machining bicycle components in Asheville, North Carolina since 2003. Every Industry Nine product is American-made from US-sourced aluminum.
