REI

The Shimano XT M770 crankset integrates the bottom bracket and crankset into a single, lightweight unit for amazing shifting performance.
- Hollowtech II technology maximizes stiffness and decreases weight
- Steel/carbon composite middle ring adds rigidity for better shifting, increases service life and smoothly delivers power to the cassette
- Bearings are spaced wide apart, changing the load of the bearings to increase rigidity and bearing service life
- Thick 44T ring provides stiffness and improved shifting performance
- 44T - 32T - 22T chainrings