Tune 31.8 mm 50 mm Bicycle Stems
Bar clamp diameter is the diamater of the handlebar.
Stem length is measured from the center of one clamp to the center of the other clamp. This measurement is sometimes known as the reach or extension.
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Tune Geiles Teil 4.0 Stem, 31.8 x 50mm, +/-8d, Black 
Info
CNC machined, laser etched and anodized 7075 aluminum with TiAI6V4 titanium bolts Perfectly suited for carbon handlebars and steerer tubes … read more
Ships Freeyour price $219.99 + ships free
Info We define color as the main color of the item. It may have accents or highlights in other colors.
Bar clamp diameter is the diamater of the handlebar.
Stem length is measured from the center of one clamp to the center of the other clamp. This measurement is sometimes known as the reach or extension.
S.H.I.S clamp diameter is the steerer tube diameter.
Stem angles are measured perpendicular to the clamp. For example, a 90 degree stem is straight. Sometimes, this may also be refered to as a 0 degree stem. If two measurements are listed, the stem can be flipped for angling up or down.
Stem Type
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