Power meter hubs essentially serve the same purpose as power meter cranks and that is to measure the output of your training through very accurate wireless technology. The difference from the hubs to the cranks is that a custom built rear wheel is needed in order for the hubs to work. Power meter hubs are great for riders in training and although they are quite expensive, the purpose definitely outweighs the cost. Brand new lower end power meter hubs can cost around $1,500 and for the better quality hubs the price can go up a few thousand dollars.
If you have any specific questions about power meter hubs, or would simply like to hear more about the importance of power meter hubs, please feel free to contact us.