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Incorporating the benefit of rigidity with minimal weight of the HollowtechII combined bottom bracket and crankset system, the new FC-M970 manages to drop even more weight while increasing shifting performance and durability. >>Hyperdrive front drive system / Enhanced durability / More precise bearing adjustment / Lighter wight and more versatile

Technical Documents
EV-FC-M970-2592EV-FC-M970-2592
SI-15H0ASI-15H0A
SI-6LK0BSI-6LK0B
SI-6M30BSI-6M30B
Features
  • New composite chainring design for improved durability
  • Titanium/Carbon composite chainring
  • Optimized lightweight design for reduced weight while maintaining rigidity
  • Hyperdrive technology for best front shifting
  • New easier installation for left crank with better bearing adjustment
  • Gearing options: 44-32-22T, 44-32-24T
Specifications
Model NumberFC-M970
SeriesXTR
Crank ConstructionHOLLOWTECH II
Cassette Compatibility9-speed
Chain CompatibilitySuper Narrow HG for 9-speed
4-Arm Chainringsyes
Cahainring Sizes44-32-22T/44-32-24T
Bolt Circle Diameter104/64mm
Crank Arm Length165/167.5/170/172.5/175/177.5/180mm
Crank Armsforged ultra duraluminum / hollow type
Outer Chainringaluminum
Middle ChainringTi / CFRP
Inner Chainringaluminum
Chainring Bolts & Nutsaluminum
Chain Guardno
Chaincase Compatibleno
Bottom Bracketincluded
E-type FD Compatibleyes
Chain Line50mm
BB Shell Width68/73mm
Average Weight770g including BB