ZIPP Service Course Alloy Stem – 90 mm ±6° (Black)
The Zipp Service Course Alloy Stem (90 mm, ±6°) is a high-performance road bike stem designed for riders who want precise steering, stiffness for sprinting, and long-term durability. Made from premium 6061 aluminum alloy, this stem offers an ideal balance between strength, weight, and ride feel.
With a 90 mm length, it provides neutral reach suitable for most road and endurance bike fits, while the ±6° angle allows flexible positioning — run it positive for a more upright endurance posture or negative for a lower, racier front end.
Finished in a clean matte black with subtle Zipp graphics, the stem integrates perfectly into any modern cockpit and pairs beautifully with Zipp Service Course and SL handlebars.
Key Features
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90 mm Length — Balanced reach for road and endurance bikes
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±6° Angle — Adjustable rise for fit customization
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6061 Alloy Construction — Strong, stiff, and lightweight
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31.8 mm Bar Clamp — Compatible with modern road handlebars
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High Clamping Force — Confident steering and sprint stability
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Matte Black Finish — Sleek and modern look