FSA's SL-K Stem is a perfect upgrade for your favorite ride. It's made of 3D-forged and CNC-machined aluminum, so it's light, durable and stiff enough for any road or mountain riding adventure. Plus, the SL-K features a feathery carbon fiber front cap for handlebar clamping security.
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.