Shimano DURA-ACE HOLLOWTECH II road bike crankset 2x11-speed, 175mm, 50-34T

Shimano DURA-ACE HOLLOWTECH II road crankset 2x11-speed, 175mm, 50-34T.

The DURA-ACE R9100 crankset offers maximum power transfer with minimum weight and is therefore used by the world's best climbers, sprinters and time trialists. Its innovative design and distinctive look are adapted to race-specific brake disc systems. It can be used with a wide range of shifting options and pedal arm lengths.

Features

• Optimal power transmission
• Optimal balance between light weight (-7 g) and efficiency
• Newly designed crank
• For high stiffness and low weight
• HOLLOWGLIDE
• 4-arm crankset
• Adapted to race specific disc brake system
• Shorter rear triangle length with 135 mm installation width
• Redesigned spline profile for wider spacing
• "Rider Tuned" downshifting options
• Legendary design

Specifications

• MODEL NO. FC-R9100
• DURA-ACE R9100 SERIES Group
• Series Color
• Average weight 614 g (50-34T)
• HOLLOWTECH II Technology ✔
• Bottom bracket shell width with thread 70 mm ✔
• Chainline (mm) 43.5
• Chainring combination 55-42T, 54-42T, 53-39T, 52-36T, 50-34T
• Compatible bottom bracket type outer ✔
• Compatible chain HG-EV 11-speed, HG-X11
• Mounting bolt for crank included ✔
• Crank arm length (mm) 175 ✔
• Crank design 4
• HOLLOWGLIDE ✔
• HOLLOWTECH technology ✔
• Optional chain guard Without chain guide / ram guard ✔
• Bolt circle diameter (mm) 110
• Rear gears 11
• Recommended bottom bracket Press-Fit SM-BB92-41B
• Recommended bottom bracket thread (normal) BB-R9100
• Technology HOLLOWTECH BB | HOLLOWTECH II
• Bottom bracket shell width with thread 68 mm ✔
• Q-factor (mm) 146