Shimano Fc-m985 Xtr 170 42/30t 10-speed W/ Bb

The XTR Race M985 double-ring crank complements race-day performance with a narrow Q-factor, unparalleled power transfer and CloseStep chainring options to suit racers speed and style. Includes bottom bracket.

• 42 tooth outer ring, 30 tooth inner ring
• CloseStep gear ratios result in quicker shifting response and fewer recovery shifts so that you don't lose momentum
• 104mm/64mm BCD
• Compatible with 10 speed chains
• Shimano Reference Number: FC-M985