Bontrager Race ATB Stem

Bontrager Race ATB Stem
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Details

Bontrager's quality manufacturing and attention to detail are showcased in the Race ATB Stem. The 3D-forged aluminum construction offers excellent lightness, strength, durability and great looks. Plus, the handlebar clamp's faceplate can be removed, which speeds and simplifies bar installation.

Stem angle is one of the factors that determines handlebar height. A listed angle of 0 degrees actually provides a rise of 16-20 degrees, depending on the bike's head-tube angle. Flexible, athletic riders prefer lower-rise stems, while recreational riders usually favor higher-rise stems.

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.

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