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Cycles U.K.£15.00Visit shop Specialized Comp Multi Stem Adjustable Stem 31.8MM X 90MM, 17 DEGREE Black/Charcoal - Cycles UK
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The Specialized Comp Multi Stem 31.8 is an ideal upgrade for road and mountain bike riders looking to dial in their cockpit geometry for better ergonomics and power output. By allowing riders to fine-tune their handlebar angle using a specialized shim system, this stem ensures a custom fit that can reduce neck and back strain during long rides; however, users should be prepared for a slightly more complex installation process compared to standard fixed-angle stems.
| Model Part Number | 20015-1013 |
|---|---|
| Brand | Specialized |
It fits bikes with standard 1 1/8-inch steerer tubes and 31.8mm handlebar clamps.
No, you must remove the faceplate and the handlebar to swap or adjust the internal angle shims.
A standard set of metric Allen keys is required for all bolt adjustments.
Yes, but ensure you follow torque limits exactly and use carbon assembly paste to protect the material.
While weight varies by length, the 3D-forged design prioritizes durability and adjustability over ultra-lightweight status.
Ensure the faceplate bolts are torqued to the correct specification and use high-friction carbon paste if using composite handlebars.
Remove the faceplate, clean the contact surfaces, apply a thin layer of grease to the bolt threads, and re-torque to spec.
To install, first ensure your steerer tube and handlebar diameter match the 31.8mm standard. Place the desired shim into the stem body to lock in your preferred angle, then align the stem onto the steerer tube. Tighten the steerer bolts evenly to the manufacturer's recommended torque specifications. When installing the handlebars, use a cross-pattern tightening approach on the 4-bolt faceplate to ensure even pressure distribution. Regularly inspect the bolts for signs of corrosion or loosening after major vibration-heavy rides, and apply a light coating of assembly paste if using carbon components to prevent slipping.
