Shimano Fc-m770 Xt 170 44/32/22t 9-speed With Bb

To create the XT HollowTech II Crankset, Shimano incorporated the crank arms and bottom bracket into a single unit to give you increased rigidity while dropping weight. Plus, Shimano hollowed out the forged crank arms to further decrease weight without compromising the strength of this crankset for your all-terrain mountain bike. The carbon-steel composite middle ring sandwiched between aluminum inner and outer chainrings adds to the life of your XT Crankset and increases rigidity for improved shifting and power.

• 44 tooth outer ring, 32 tooth middle ring, 22 tooth inner ring
• Hollow forged crank arms are stiff and light
• Composite middle ring for extra durability and smoother shifting
• Includes bottom bracket
• Compatible with 9 speed chain