Left crank FC-R9100-P

• Chosen by the world's top climbers, sprinters and time trialists, the DURA-ACE R9100 crank reduces weight while maximizing power transfer.
• The new design, and iconic look, is tailored to race-specific disc brake systems while offering a wide range of gearing options and crank arm lengths.

Features:

• Optimal power transfer: - Best balance between light weight (-7g) and efficiency.
• New crank arm designed to maintain high stiffness and reduce weight: - HOLLOWGLIDE - 4 arm crankset Adapted to race specific disc brake systems: - Shorter rear center length with O.L.D.135mm
• Redesigned gear tooth profile to accommodate wider gear pitch
• Rider-friendly gearing options: - Iconic design:
• HOLLOWTECH II technology: Yes - Threaded bottom bracket width_70mm: Yes - Chain line (mm): 43.5 - Chain ring combination: 55-42T, 54-42T, 53-39T, 52-36T, 50-34T - Compatible crankset type_Outside: Yes - Compatible chain: HG-EV 11-speed, HG-X11 - Crank mounting bolt included: Yes - Crank arm length (mm)_165.0 : Yes - Crank arm length (mm)_167.5 : Yes - Crank arm length (mm)_170.0 : Yes - Crank arm length (mm)_172.5 : Yes - Crank arm length (mm)_175.0 : Yes - Crank arm length (mm)_177.5 : Yes - Crank arm length (mm)_180.0 : Yes - Transmission arm : 4 - HOLLOWGLIDE : Yes - HOLLOWTECH technology: Yes - Optional chain guard_Without chain guard/mudguard: Yes - D.C.P. (mm): 110 - Rear gears: 11 - Recommended BB_Pressfit: SM-BB92-41B - BB recommended_Filet (normal): BB-R9100 - Technology: HOLLOWTECH BB | HOLLOWTECH II - Threaded shell width_68mm: Yes - Q-factor (mm): 146