Products

BASHGUARD: Do not use the bashguard for the FC-M810 single chainwheel with the FC-M665 chainwheel, as it will not function correctly. Shimano bashguards are designed together with the crank arms to provide strength, rigidity and good shifting performance. (Please read the Service Instructions.) CHAIN DEVICE: When installing a BB mount-type chain device to a bicycle, refer to the Service Instruction.

Technical Documents
Features
  • 2 tone colored crank arm
  • High rigidity crank arm
  • Accurate chainline construction by 2-piece structure
  • Honeycomb designed bash guard absorbs impact
Specifications
Model NumberFC-M665
SeriesSLX
Crank ConstructionHOLLOWTECH II
Cassette Compatibility9-speed
Chain CompatibilitySuper Narrow HG for 9-speed
4-Arm Chainringsyes
Cahainring Sizes36-22T Mountain Compact
Bolt Circle Diameter104/64mm
Crank Arm Length170/175mm
Crank Armsforged aluminum / hollow type
Outer Chainring-
Middle Chainringaluminum
Inner Chainringsteel
Chainring Bolts & Nutsaluminum (bolt), steel (nut)
Chain GuardBash Guard
Chaincase Compatibleno
Bottom Bracketincluded
E-type FD Compatible-
Chain Line46.8mm
BB Shell Width68/73mm
Average Weight999g including BB