The
Shimano XTR M980 bottom bracket is a lightweight and reliable bottom bracket for your
Shimano mountain crankset. Featuring wide-set and smooth rolling
Hollowtech II sealed cartridge bearings for long life and all-weather reliability.
- Compatible with all Hollowtech II mountain cranks
- 68/73 English thread
- Includes right and left bearings and cups, inner shield with o-ring, and 3 2.5mm spacers
Confused about bottom bracket standards and what it is you need? Here's a comprehensive look at the subject:
The Bottom Bracket (Un)Standard blog post.