Precision Pedalling
To the core of the bicycle, the crankset, Shimano has come up with a no holds barred approach, ensuring that pedal efficiency is maximised, weight is minimised, stiffness is second to none and shifting precision is the best available on the market.

HollowTech II
Maintaining the fine balance between lightweight and stiffness, Shimano's crank arms are hollow, while not compromising on rigidity. This design allows a lighter crankset, maximising power transfer from foot to pedal, improving acceleration and overall power output over the course of a ride. And its rigid cross-sectional design with Shimano's unique forging process brings the best of stiffness and strength to the crankset, giving you the confidence to push hard when needed. With a crankset that rivals the best on the market, Shimano's Dura-Ace crankset is perfect to give you that extra edge on your next ride.. Hollow arms and chainrings
. Keeps weight to a minimum
. Stiffness and shifting precision is maximized
. Optimal balance of stiffness, strength, weight, and rotational performance
. HOLLOWGLIDE structure cuts weight yet maintains strength
. Offers better power transfer and quicker, more precise front shifting

Specifications
. Series: Dura-Ace R9200
. Weight: 692g
. Chainring Combination: 52-36T
. Crank Arm Length: 167.5mm
. Q-factor: 148mm
. Chain Line: 44.5mm
. Bolt Circle Diameter: 110mm