Bolt Easton's EC90SL Stem to your road bike and watch the grams disappear. This ultra-light carbon beauty sports Easton's TaperWall technology to provide the perfect balance of low weight, high strength and stiffness for excellent steering control in all conditions. Plus, Easton's Top-Lock and Distributed Stress technologies lock the stem and faceplate together, allowing for a highly rigid interface while minimizing loads on the bolts, making the EC90SL perfectly safe for carbon bars. What's more, the EC90SL uses titanium hardware to keep weight to an absolute minimum.
Stem length is measured along the side of the stem from the center of the steerer to the center of the handlebar clamp (see diagram). Keep in mind that as a stem provides more rise, its effective length decreases. In the example above, if the +17-degree stem measures 135 mm, it actually extends 108 mm parallel to the ground.