TOSEEK Carbon Alloy MTB Handlebar Stem 31.8mm Ultralight
TOSEEK Carbon Alloy MTB Handlebar Stem 31.8mm Ultralight
TOSEEK Carbon Fiber Surface & Aluminum Alloy MTB Handlebar Stem – Ultralight & Versatile
Upgrade your mountain bike's cockpit with the TOSEEK Carbon + Aluminum Alloy Handlebar Stem. Engineered for cyclists who demand both performance and style, this stem combines a carbon fiber surface with a high-strength aluminum alloy body to deliver an exceptionally rigid yet lightweight connection between your fork and handlebars.
Note: This product features a carbon fiber surface finish over an aluminum alloy main body. Please review all specifications carefully before purchasing.
Key Specifications
- Brand: TOSEEK
- Material: Carbon Fiber Surface + Aluminum Alloy Body
- Rise Angles: 10° / 17° / 25° / 35°
- Length Options: 70mm / 80mm / 90mm / 100mm
- Handlebar Clamp Diameter: 31.8mm (compatible with 31.1–32.5mm range)
- Fork Tube Diameter: 28.6mm (1-1/8 inch)
- Height: 36–45mm
- Weight: Approx. 141g (35° / 100mm; weight varies by size)
- Finish Options: Matte (default) / Glossy
- Country of Origin: Made in Mainland China
Why Choose This Stem?
- High Strength, Low Weight: The carbon fiber surface and aluminum alloy construction give you a stiff, durable stem without unnecessary grams on your build.
- Multiple Angle Options: Choose from 10°, 17°, 25°, or 35° rise angles to dial in your ideal riding position and fit.
- Multiple Length Options: Available in 70mm, 80mm, 90mm, and 100mm lengths to suit different reach preferences.
- Stylish Dual Finishes: Select matte (shipped by default) or glossy finish — contact us after ordering to request glossy.
- Wide Compatibility: Fits standard 31.8mm handlebars and 28.6mm (1-1/8") fork steerer tubes, making it compatible with most modern MTB setups.
Package Contents
- 1 × TOSEEK Bicycle Handlebar Stem (matte finish by default)
Important Notes
- Default shipping finish is matte. If you prefer glossy, please leave a remark when placing your order or contact us directly.
- Slight size deviations may occur due to manual measurement methods and tools.
- Colors may vary slightly depending on photography lighting, angle, and your display monitor.
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Frequently Asked Questions
Q: What handlebar diameter is this MTB stem compatible with?
A: The TOSEEK handlebar stem features a 31.8mm handlebar clamp diameter, compatible with handlebars ranging from 31.1mm to 32.5mm — the most common standard on modern mountain bikes.
Q: What fork steerer tube size does this stem fit?
A: This stem is designed for a 28.6mm (1-1/8 inch) fork steerer tube, which is the standard size found on the majority of MTB and road forks.
Q: Can I get a glossy finish instead of matte?
A: Yes! The default shipping finish is matte. If you prefer a glossy finish, simply leave a note when placing your order or contact our team, and we will arrange it for you.
Q: How light is this handlebar stem?
A: The 35° / 100mm version weighs approximately 141g. Different size and angle combinations will have slightly different weights, making this one of the most ultralight stem options for MTB builds.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.