Velocity hubs turn silky smooth on cartridge bearings, and cassettes are driven by a dependable 3 pawl ratchet. Road, mountain, track, and tandem hubs available. Contact me to get rolling on a pair of hand built wheels with these great hubs.
Mountain disc hubs are 6 bolt and come in all the different axles. Pictured is the ATB $230. There are also lightweight and convertible hubsets. Also a single speed rear hub with a cassette for faster engagement.