Lighter than ever, and with great looks to boot, FSA's SL-K stem is a pro-level way to upgrade your bike's part spec. 3D-forged and CNC-machined aluminum is super light and incredibly stiff. The carbon fiber faceplate adds style and even greater weight savings. The offset steerer clamp provides even clamping pressure on carbon steerer tubes.
Stem angle is one of the factors that determines handlebar height. A listed angle of 0 degrees actually provides a rise that is dependent on your bike’s head angle (see image).
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 135mm, it actually extends 108mm parallel to the ground.