Shimano Dura Ace FC-R9100 11S Chainring set for 53/39T Crank Road Bike Bicycle

  
Shimano FC-R9100 Chainring New in Box Brand: Shimano Model: R9000 Size:? 53/39T Qty: 1set (53T1 and 39T1) Only for 2 x 11 Speed.

Shimano Dura Ace chainring for FC-R9100 2x11-speed Dura Ace cranksets with a bolt circle diameter of 110mm. The 11-speed drive allows each driver to "tune" the bike for each specific application by various gradations.