EZ Aero Front Derailleur Guard Di2 12spd

EZ Aero Front Derailleur Guard (Patent Pending)

Avoid power failure due to weather conditions with the front derailleur guard, it has also been designed so that it protects derailleur from the wind throughout the whole range of movement.

Smooth the airflow of your front derailleur and save a massive 2-5.8 Watts across 30-50 kph.