Shimano Dura-Ace FC-R9200 Crankset - 167.5mm 12-Speed 50/34t Hollowtech II Spindle Interface BLK CTF-L-33 AirBoost air inlet at the

AirBoost air inlet at the front increases front vent surface area by 32% allowing more air intake

Color Black Rings 32 Number of Chainrings Single Crank Length (mm) 170 Crank Intended Use Mountain Drivetrain Speeds 11 BB Included No Pedal Spindle 9/16" Spindle Interface Type Shimano Hollowtech II Chainring BCD 96 Shimano Asymmetric Chainline/Hub Compatibility 141/148 Boost Hubs Defined Color Black

Dura Ace SW-R9150 Shifter Set

Speedmax 9 RL BOA

Shimano Dura-Ace FC-R9200 Crankset - 167.5mm 12-Speed 50/34t Hollowtech II Spindle Interface BLK CTF-L-33 AirBoost air inlet at theThe Shimano Dura Ace FC R9200 crank performs two vital functions; transferring your pedaling effort into the drivetrain and ensuring the fastest most precise front shifting available. With HOLLOWTECH II crank arms to ensure light weight and Shimano's class leading chainring designs the FC R9200 won't let you down. Optimal balance of stiffness strength weight and rotational performance HOLLOWGLIDE structure cuts weight yet maintains strength for better