Designed with Hollowglide technology the Dura Ace FC-R8100 chainrings enables an exceptionally smooth and fast shifting process. Whilst the high rigidity hollow structure cuts down weight yet still maintains strength.

Material: aluminium, carbon fiber reinforced plastic
Technology: Hollowglide
Chain line : 44.5mm
Bolt circle diameter : 110mm asymmetrical
Colour: Anthracite

Compatibility cranks : Shimano Dura Ace FC-R9200 - FC-R9200-P