- Familiarity: I've put it through the wringer
These brakes require A LOT of maintenance. Not only do they need bled a lot, but they are very difficult to bleed. Save yourself the time and frustration and take them to a bike shop. I've been through two sets of X0s and one set of trails and have since switched to Shimano. The XTs have as much power as the trails and they are extremely low maintenance and a fraction of the price.