Bike Stems Buying Guide
The bike stem 
is what connects the handlebar to the steering tube part of the bicycle fork on a bicycle. It is one of the bicycling parts that can be more personalized, making a statement about the cyclist. Read on to learn more!
Types of Stems
Quill
- This is a more old fashioned stem style where the stem inserts into the steerer tube.
- It offers the ability to adjust handlebar height because of the long neck inserted into the steerer tube.
- It has a slender and smooth appearance.
- It does not protrude above the bicycle's headset.
Threadless
- This has become the new industry standard by replacing the quill. It clamps around steerer tubes and does protrude above the headset.
- It can be easily changed for new angles, styles, and colors that are readily for sale.
- They are made from lighter materials such as aluminum alloy and carbon fiber, adding to the overall agility of the bicycle.
- The centering of the stem can be easily adjusted without disturbing the height of the handlebar.
Stem Construction
- Materials stems are made from are aluminum, steel, titanium, and carbon fiber. The most commonly used one is aluminum for its light weight.
- Attachments are how the stem connects to the handlebar. There are two ways of attaching the stem--one is by pinchbolts which requires "feeding" the handlebar through the stem; this can pose as a problem for some because, in order to do so, all accessories from the handle bar must be removed first. The second method is by using a faceplate; this method allows accessories to stay intact and is easy to use.
- Length is what determines how far away the handlebar is from the steerer tube.
- Angle of the stem is more relevant for quill stems. They are normally 73 degrees which run near-parallel to the ground. For threadless stems, there are adjustable angles.
Stem Variations
- Adjustable stems are available for cyclists to change settings easily by moving the stem on a movable clamp on the bicycle handlebar.
- Suspension stems allows for 3 inches of travel and help with shock absorbency through a steelspring coil. Suspension is needed for mountain bicycles especially.
Major Manufacturers
Quick Picks
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Easton EA70 - Fits standard 1 1/8" steer tubes.
- 2 bolt faceplate for easy installation.
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Easton EA50 - 3D Forged 2014 aluminum.
- Shot peened finish.
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Azonic Barretta - Ideal for downhill and mountain riders.
- CNC Machined / 6061 T6 Aluminum.
- 45mm extension.
- 0 degree rise.
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Easton Vice DH/FR - For aggressive cross-country and all-mountain riders.
- 10 degree rise -Stack Height 42mm.
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Race Face Evolve XC - Mountain bike stem.
- High strength aluminum.
- Great for cross country riders.
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