Originally Posted by whiteind

The question was asked why did we feel it necessary to introduce a splined fixed gear hub. The reason is because there are many problems with threaded cogs stripping hub shells. It is fairly costly to replace the hub and rebuild a wheel when this happens, and we feel we have a solution that will address the problem. The splined interface allows for a tight fit between the hub shell and the cog. The lock ring synches down and holds the cog in place. It is simple and effective. The intent of the design was not for ease of switching out gears, however, the bottom line is, it is much easier and is an added bonus.