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. The EA90 SL uses Ti screws to further reduce the weight to 110 grams (100 mm). At this weight, we outperform most of the alloy and carbon competition on the market, while maintaining the superior durability you expect from Easton. 3D forged EA90 alloy Titanium bolts TopLock design for easy handlebar installation Lengths from 70 mm to 130 mm Diameter 31.8 Stroke +/-7 EA90 SL includes Garmin Easton ICM computer mount