Shimano FC-R9200 DURA-ACE 12Speed Front Chainwheel

DURA-ACE FC-R9200 crank, the heart of the bicycle, ensures that no portion of your pedal stroke is wasted. With hollow arms and chainrings, weight is kept to a minimum but stiffness and shifting precision is maximized. The 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. The FC-R9200 is offered in even shorter crank arms lengths to offer fit options for any rider. FEATURES - Optimal balance of stiffness, strength, weight and rotational performance - HOLLOWGLIDE structure cuts weight yet maintains strength for better power transfer and quicker, more precise front shifting - New 54-40T option to realize the most efficient drivetrain PRODUCT SPECIFICATIONS - MODEL NO FC-R9200 - SERIES DURA-ACE R9200 Series - Color Series color - Average weight 685 (50-34T) 714 (54-40T) 692 (52-36T) - Threaded bottom bracket shell width (mm)_70 - Chainring combination 50-34T 52-36T 54-40T - Compatible bottom bracket type_Outboard - Crank fixing screw included - Crank arm length (mm)_160 - Crank arm length (mm)_165 - Crank arm length (mm)_167.5 - Crank arm length (mm)_170 - Crank arm length (mm)_172.5 - Crank arm length (mm)_175 - Crank arm length (mm)_177.5 - Spider/Gear arms 4 - HOLLOWGLIDE - HOLLOWTECH II - HOLLOWTECH crank arm - Optional chain guard_Without chain/bash guard - Recommended bottom bracket_Press-fit SM-BB92-41B - Recommended bottom bracket_Threaded (normal) BB-- R9100 Threaded bottom bracket shell width (mm)_68 Q-factor (mm) 148 Chain line (mm) 44.5 Compatible chain HG 12-speed P.C.D. (mm) 110 Rear speeds 12