Take to the air with Bontrager's Earl OS Freeride Stem. It's constructed from cold-forged 6061-T6 aluminum for awesome strength. And its massive 4-bolt faceplate and opposing-bolt steerer clamp grip ultra securely.
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.