- Make sure this fits by entering your model number.
- Cogs: 1.37″x24tpi (right handed) threads, 1/2″ x 3/32″ teeth (OK for 9sp chain)
- Lockring (GU-1799): 1.29″x24tpi (left handed) threads, 4-notch tool fitting (sold separately)
This fits your .
CNC machined threaded steel track cogs or lockring both with chrome-plated finish