Shimano Front Chainwheel FC R9200 P Dura Ace For Rear 12Speed Size:50x34T 46 ounces/41

46 ounces/41

your sit bones remain fully supported atop the center of the insert

During strenuous activities

Brake Size: 90/100/110/120mm

Shimano Front Chainwheel FC R9200 P Dura Ace For Rear 12Speed Size:50x34T 46 ounces/41"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