Moving up to 180mm rotors to get some extra stopping power out of your XC or AM bike? This Shimano XTR disc brake adapter mounting bracket enables you to use 180mm rotors with 74mm Post Mount calipers on 51mm IS rear frame mounts. Go XTR and get the best over the rest.
- 180mm rotor size
- 74mm Post Mount caliper
- 51mm IS front fork mount
- Rear Frame use only