Phil Wood Pro track hubs come with Carbonyte Phil spec bearings which are our low drag bearing option which have partial contact seals and have a 30% fill with full synthetic Phil Carbonyte grease.
For full spec, please visit Phil Wood's page for this item.
Please note: For optimal performance, it is recommended that you use the Phil Wood track cog. They are offered in both 1/8″ and 3/32″. The specification for the threading is 1.370 x 24 tpi, but Phil Wood hubs will accommodate most high quality cogs. If, during installation, the cog jams or binds, STOP. Forcing a cog onto the hub will result in irreparable damage to the threads. As with any cog installation, lubricate both the cog and lock ring threads. Some cog manufacturers are making cogs that are not ideal for use with Phil Wood hubs due to their thickness (which is generally a result of plating). For this reason, it is not recommended that you use any other manufacturers lock ring on Phil Wood track hubs. The additional thickness can result in stripping of the lock ring and/or hub threads because there is not enough thread engagement.