This product is an 11T sprocket with 12mm bore for the 219H chain to run on your X1 Pro or X1 Stealth kit.
Compatibility:
- X1 Stealth Gen 3
- X1 Stealth Gen 1
- X1 Pro Gen 3
- X1 Pro Gen 2
Note:
The X1 Stealth Gen 1 pressfit versions with Freewheel 2.0 have a special 11T to accommodate for the chainline.