X-Range gearing technology gives you more range and a smoother gear progression, so you're always in the right gear.
- Updated tooth profiles for improved wear
- One-piece construction for faster, smoother, more secure shifting
- More durable finish
- Direct Mount
- Material: Aluminum
|Polar Grey / Direct Mount / 50/37T / 12-speed||710845825774||00.6218.017.002||210000045314|