Wiki Bicycle » Shimano » FC-M660
Information from: www.shimano.com.
Shimano SLX Mountain Cranks. SLX Hollowtech II Cranksets feature hollow forged crank arms, durable pipe billet steel axles, and smooth shifting SG-X chainrings. Model FC-M660 features traditional MTB triple chainrings, while model FC-M665 features the new Mountain Compact Drive gearing (36-22) along with an integrated bash guard.
Technical Documents
Features
Honeycomb designed bash guard absorbs impact
Increased ground clearance
Reinforced construction for extreme riding style
Accurate chainline construction by 2-piece structure
High rigidity crank arm
2 tone colored crank arm
Composite middle chainring offer double service life, improved shifting and smoother pedaling
Specifications
Average Weight: 889g including BB (44T)
BB Shell Width: 68/73mm
Chain Line: 50mm
E-type FD Compatible: yes (44T)
Bottom Bracket: included
Chaincase Compatible: no
Chain Guard: option
Chainring Bolts & Nuts: aluminum (bolt), steel (nut)
Inner Chainring: steel
Middle Chainring: steel + composite (32T), aluminum (36T)
Outer Chainring: aluminum
Crank Arms: forged aluminum / hollow type
Crank Arm Length: 170/175mm
Bolt Circle Diameter: 104/64mm
Cahainring Sizes: 44-32-22T/48-36-26T
4-Arm Chainrings: yes
Chain Compatibility: Super Narrow HG for 9-speed
Cassette Compatibility: 9-speed
Crank Construction: HOLLOWTECH II
Series: SLX
Model Number: FC-M660