1x Aero Chain Guide Mirrors Increases propulsion through water

Increases propulsion through water

The sleeveless version of Castelli's Free Sanremo suit

steel axle

trekking and ATB use

Quick Exit Legs: 1

1x Aero Chain Guide Mirrors Increases propulsion through waterConvert 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