Shimano SLX Crankset 9 speed Dyna-Sys FC-M660 HollowTech II Compatibility and specifications

Shimano SLX Crankset 9 speed Dyna-Sys FC-M660

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.

The FC-M660 Hollowtech II SLX crankset features a composite middle ring for double the service life, improved shifting performance, and a reinforced construction for a rugged riding style. A 2-tone colored crank arm, high rigidity crank arm.

Model Number: FC-M660
Series: SLX
Crank Construction: HOLLOWTECH II
Cassette Compatibility: 9-speed
Chain Compatibility: Super Narrow HG for 9-speed
4-Arm Chainrings: yes
Cahainring Sizes: 44-32-22T/48-36-26T
Bolt Circle Diameter: 104/64mm
Crank Arm Length: 170/175mm
Crank Arms: forged aluminum / hollow type
Outer Chainring aluminum
Middle Chainring: steel + composite (32T), aluminum (36T)
Inner Chainring steel
Chainring Bolts & Nuts: aluminum (bolt), steel (nut)
Chaincase Compatible: no
Bottom Bracket: included
E-type FD Compatible: yes (44T)
Chain Line: 50mm
BB Shell Width: 68/73mm
Average Weight: 889g including BB (44T)
To lock the crank you'll need Shimano crank-arm/cap tool TL-FC16.
To fit or remove the HollowTech II BB, you'll need Shimano Tool TL-FC32 or alternative is the 2 in 1 Park Tool Bottom Bracket Tool BBT-9C.

Japan Retail Price: 14.800 yen (please check here for cross rate).

Compatible with Shimano 9 speed rear derailleur.

Compatible with 9 speed HG chain.

Compatible with HollowTech II BB; SM-BB7900, SM-BB90, SM-BB91, SM-BB6700, SM-BB5700, SM-BB70, SM-FC7800, SM-FC4500, SM-FC6600, SM-FC6601, SM-FC5600.

Compatible with other branded Hollow Tech II BB, FSA BB86, Chris King, Hope, etc...

Park Tool BBB-2 The Big Blue Book of Bicycle Repair - 2nd Edition