Whether the goal is a finish line, epic adventure or simply getting back home again, our new 900 hubs are ready for the challenge. On the inside, our smooth and durable DOUBLE TIME? drive mechanism ensures rapid lightning-fast engagement for quick and confident pedal responsiveness. SPEEDBALL? bearings provide smooth, long-lasting rotation performance. Multiple spoke-count and cassette-capability options, as well as interchangeable end caps make the 900 hubs a perfect choice for any disc-equipped road, gravel, cyclocross, cross country, trail, or enduro bike.