EA90 extensions have a larger arm diameter for increased stiffness and by using the highest quality alloys, excess material has been removed for even greater weight savings. Easily mount your own Garmin mount with the ICM system for cleaner lines and better aerodynamics. 3D forged EA90 alloy TopLock design for easy handlebar installation Lengths from 50 mm to 130 mm Diameter 31.8 Stroke +/-7 EA90 SL includes Garmin Easton ICM computer mount