The Bubba hubs feature ClockD dual-adjustable ratchet rings. ClockD allows the rider to adjust the 6-pawl system from 8 degrees of engagement for fast heavy-duty use or to 4 degrees for super-fast engagement for technical riding. The shell is forged and post-op machined out of lightweight 6061 aluminum, a stout 7075 aluminum axle, and Shimano HG or SRAM XD freehub body options in the original Team 3D Violet ano.