Shimano Dura-Ace FC-09 11 Speed Outer Chainring 50T

Designed for hilly terrain, this is a direct replacement for 11 speed Dura-Ace outer chainrings and will replace 53T chainrings as it uses the same bolt circle. Built with HOLLOW GLIDE technology, the Shimano FC-09 outer chainring combines lightweight structure with heightened rigidity, effectively eliminating flex under heavy load. This direct response supports smoother, faster shifts even during maximum effort, making it a trusted component for race-day setups or intensive training sessions. Specifically tailored tooth profiles optimize interaction with Shimano 11-speed chains, maximising peddling efficiency and sustaining high-output efforts across road, time trial, and triathlon courses.

• HOLLOW GLIDE hollow outer ring design improves rigidity while keeping weight low
• Eliminates flex for consistent and accurate shifting, even during high-torque efforts
• Tooth profiles refined for seamless integration with Shimano HG 11-speed chains
• Designed to maintain contact, enhance pedaling efficiency, and optimize power transfer
• Gear arm compatibility: 4-arm
• Bolt Circle Diameter (BCD): 110 mm
• Colour: Black