1x Aero Chain Guide Dura-Ace Di2 15% Elastane

15% Elastane

The HSF Aeria bottle smooth's airflow onto the frame

predictable stopping power for a wide range of MTB disciplines

- Carbon composite sole with stiffness 6 giving it all

1x Aero Chain Guide Dura-Ace Di2 15% ElastaneConvert your 2x crank into a 1x setup by replacing your bulky and non aero front derailleur with this slim aero optimised unit (improves airflow around the derailleur area to minimise drag and save you a few watts). Also prevents those annoying accidental shifts to the small ring when you least want them! 24mm up down adjustment (including frame bracket) Suits ROUND chainrings from 50T to 62T Suits OVAL chainrings from 50T to 58T Fits to 2 ring crank