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38.1 Bicycle Stems

S.H.I.S clamp diameter is the steerer tube diameter.

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Thomson X4 1.5" 45mm 0 Degrees 31.8 Black
Thomson X4 1.5" 45mm 0 Degrees 31.8 BlackThomson

Thomson X4 One Point Five Stems feature custom heat-treated bolts with corrosion-preventative plating. Machined 7000-series extruded bar … read more

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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

This is the part number or identifier for this item from the manufacturer

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