The Zipp Service Course stem is a short-length, threadless road stem designed for use with 1 1/8" fork steerers and modern oversize handlebars. It is constructed from AL6061 aluminum to balance strength, stiffness, and weight.
This version features updated faceplate and body geometry to improve clamping stiffness and simplify installation. The four-bolt faceplate distributes load evenly across the handlebar interface. With a ±25° angle range, the stem supports a wide range of handlebar height and reach adjustments, particularly useful for compact or endurance-oriented cockpit setups.
At 75 mm in length with a 41 mm stack height, this stem is intended for riders needing a shorter reach or more aggressive angle adjustment while maintaining compatibility with contemporary road components.
Fit & Use Signals
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Fits 1 1/8" threadless steerer tubes
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Accepts 31.8 mm handlebar clamp diameter
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75 mm stem length
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±25° angle range for significant height and reach adjustment
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41 mm stack height
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Intended for road bike cockpits using oversize handlebars
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Not compatible with 26.0 mm or 25.4 mm handlebars
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Requires correct torque on faceplate and steerer clamp bolts during installation
