Crankset (3x9-speed)

Hyperdrive system for best front shifting. Wide variation for various choices.
  • pretty_bullet.png Smooth/light action shifting performance with HYPERDRIVE technology
  • pretty_bullet.png High rigidity, easy assembly OCTALINK
  • pretty_bullet.png Variety of specs 44/48T option Chain guard option

Product Specs

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Model Number FC-M391-8
Series Acera
Crank Construction OCTALINK technology
Cassette Compatibility 9
Chain Compatibility Super Narrow HG for 9-speed
4-Arm Chainrings Yes
Crank Arm Length 170mm,175mm
Outer Chainring 44T / 48T
Middle Chainring 32T / 36T
Inner Chainring 22T / 26T
Chainring Bolts & Nuts Yes
Chain Guard Option
Chaincase Compatible Chain Case Compatible Crank Arm
Bottom Bracket BB-ES25(-K)
Chain Line 50.0
BB Shell Width 126(-K)