Following on from the success of our entry level track wheels, weve introduced a new version using a fully sealed, cartridge bearing hub. Built onto this new hub is the classic Mach 1 Omega rim, using black spokes. The new hub not only makes the wheel much more smooth running, but along with a hollow axle, it also reduces the weight of the wheel & improves the aesthetics. Still coming with a 16T sproket, this rear flip-flop hub is ready to ride