The SLX FC-M660 crankset for is designed for Dyna-Sys, Shimano's new 10-speed drivetrain. The goal of Dyna-Sys is to provide the rider with an intuitive gear combination which then translates to more efficient use of power being delivered to the rear wheel. The secret of Dyna-Sys is the 32-tooth Primary Driving Gear which lets riders get the most out of modern suspension designs.
Please Note: This is marked an OE Item because it lacks original packaging. The item has never been installed or used.
- Fits 68/73mm bottom bracket shells
- Bottom bracket not included
- Steel/glassfibre composite middle chain ring for great durability
- Hollowtech II hollow-forged aluminum crankarms
- Durable pipe billet steel axles
- Wide gear range for all conditions
- Integrated Crank Spindle
- Approximate weight 889 grams, including bottom bracket
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