Shimano's M431 9-Speed Octalink chainset is lightweight and durable and is equipped with Shimano's Hyperdrive SG-X chainrings, which provide quiet and trouble-free shifting.
Material: Aluminium crank arms with Steel chainrings
Tooth Count: 26/36/48T
Bottom Bracket Type: Octalink
Chainring BCD: 104/64
Bolt Pattern: 4-Bolt
Hyperdrive SG-X chainrings
Crank-FD Type: Mountain Triple
Chain Compatibility: 9-Speed
Pedal Spindle: 9/16"
Intended Use: MTB
Crank arm length: 170mm (includes both crank arms)