Though the Zircus's new and tough lightweight frame isn't dirt-bike approved, it's tapered headtube means you can upgrade the fork in the future if you want to. The new microdrive drivetrain with a small 26T chainring is a superb update for the entry-level riders, while the rear hub wisely retains the super-strong 10T driver that's used on the more expensive Metropolis 3 and Movement 3 models. It's lighter, more durable, and more stylish than ever before. Mechanical disc brakes offer reliability and ease of maintenance. This really is a wonderful bike for the city, off-road, and pump tracks.