Shimano Deore XT M770 4-Arm Crank with Bottom Bracket (mountain crankset) ($308.00)
"As Mountain Bikes continue to become more diverse, components must evolve. Shimano Deore XT addresses the needs of today's riders just like it did when it was first introduced back in 1982 as the world's first MTB crank."
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Carbon composite/Steel composite middle ring adds rigidity for better shifting and increased service life Outboard bearings maximize stability and stiffness Hollowtech II design maximizes stiffness while keeping weight to a minimum