The true spirit of the sport
Shimano's Ultegra 11-speed asymmetric chainrings provide clean chain engagement for reliable riding. The 110 BCD bolt pattern is compatible only with cranks with a matching 110 BCD, 4-bolt pattern.

• Ultegra components lead in all-day riding comfort with smooth power transfer and shifting.
• Redesigned tooth profile for improved shifting and chain retention
• Hollowglide technology for light weight and stiffness