For use with Shimano Ultegra FC-6800 11spd Double Chain set. Can also use the 39T Inner Chainring from the Shimano Dura-Ace FC-9000, this is a "B" match which indicates that the parts are usable, but differ in materials, appearance, finish & size etc.
Key Features
- Material: Aluminum
- Teeth: 34t, 36t, 39t, 50t, 52t, 53t
- Bolt Pattern: 4-Bolt
- Chainring BCD: 110mm
- Chain Compatibility: 11-speed/double