Servicing a freehub is a fairly simple job, yet one many cyclists don't do. The result are wheels that don't spin completely free, which means wasted energy while out on the bike. Don't let this happen to you. Instead follow along with the gang from the Global Cycling Network to learn the basic steps of servicing a Mavic freehub. The same principles apply to most other hubs on the market. And if you have tips about getting this job done, let us know about them in the comments section below.