
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 Number | FC-M665 |
| Series | SLX |
| Crank Construction | HOLLOWTECH II |
| Cassette Compatibility | 9-speed |
| Chain Compatibility | Super Narrow HG for 9-speed |
| 4-Arm Chainrings | yes |
| Cahainring Sizes | 36-22T Mountain Compact |
| Bolt Circle Diameter | 104/64mm |
| Crank Arm Length | 170/175mm |
| Crank Arms | forged aluminum / hollow type |
| Outer Chainring | - |
| Middle Chainring | aluminum |
| Inner Chainring | steel |
| Chainring Bolts & Nuts | aluminum (bolt), steel (nut) |
| Chain Guard | Bash Guard |
| Chaincase Compatible | no |
| Bottom Bracket | included |
| E-type FD Compatible | - |
| Chain Line | 46.8mm |
| BB Shell Width | 68/73mm |
| Average Weight | 999g including BB |