XX1 Hack | Bikemag

By Vernon Felton
About a month ago OneUp components burst onto the scene with their new 42-tooth cog. If that doesn’t sound “burst onto the scene” worthy, consider this: They claimed you could use that cog to build a single-ring drivetrain with the same kind of low gearing available on SRAM’s XX1 and X01 groups for a fraction of the cost.
We’ve begun to assemble our affordable XX1 hack, but before we get into the details, here’s a bit more background on why you should even give a damn.