The SRAM X.9 upgrade kit is a great way to step up your used drivetrain or install on a new build. The X.9 components are designed off of the X0 platform and work extremely well. In fact, blind fold testing could prove it to be almost impossible to tell the difference between X.9 and X0. Exotic components like carbon fiber are replaced with alloy. Function is virtually the same.
The kit includes one pair of shifters with cable housing, long cage rear derailleur, chain and cassette. The cassette comes in two options, so you will need to choose your size.
9 speed Upgrade Kit Includes: