3K Carbon Fiber Headset Spacers 10/15/20mm – 1-1/8" Bike
3K Carbon Fiber Headset Spacers 10/15/20mm – 1-1/8" Bike
3K Matte Carbon Fiber Headset Spacers for 1-1/8" Steerer Tubes
Upgrade your bike's stem stack with these lightweight, full carbon fiber headset spacers. Precision-cut in a classic 3K matte weave finish, these spacers deliver professional-grade performance for road, gravel, and mountain bikes. Each set includes three spacers (10mm, 15mm, and 20mm) so you can dial in your exact cockpit height for the perfect ride position.
Made in Mainland China.
Key Features
- Full 3K Carbon Fiber Construction — Ultra-lightweight without sacrificing stiffness or durability
- Matte Black Finish — Clean, stealth look that complements any build
- Three Sizes Included — 10mm, 15mm, and 20mm spacers (one of each per set)
- Fits 28.6mm (1-1/8") Steerer Tubes — Compatible with the most common threadless fork standard
- Reinforced Wall Thickness — Approximately 1.9mm strengthened construction for confident torque resistance
- Minimal Weight — 5.4g / 7.4g / 10.5g for 10 / 15 / 20mm respectively — every gram counts!
- Easy Stack Customisation — Mix and match the three spacers to achieve your ideal bar height
Specifications
| Material | Full Carbon Fiber (3K Weave) |
| Finish | Matte Black |
| Steerer Compatibility | 28.6mm (1-1/8") Threadless |
| Heights | 10mm, 15mm, 20mm |
| Net Weights | 5.4g / 7.4g / 10.5g |
| Wall Thickness | ~1.9mm (Strengthened) |
| Quantity | 1 Set = 3 Pieces (one per size) |
| Color | Black |
What's in the Box
- 3× Carbon Fiber Headset Spacers (10mm, 15mm, 20mm — 1 pc each)
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Frequently Asked Questions
Q: What steerer tube size do these carbon fiber headset spacers fit?
A: These spacers are designed for 28.6mm (1-1/8") threadless steerer tubes, which is the most widely used standard on road, mountain, gravel, and hybrid bicycles. Always confirm your fork's steerer diameter before ordering.
Q: Can I use all three spacers together to increase stack height?
A: Absolutely! The set includes 10mm, 15mm, and 20mm spacers that can be stacked in any combination — for a maximum of 45mm of total additional height — giving you flexible cockpit adjustment without buying multiple products.
Q: How durable are carbon fiber spacers compared to aluminium ones?
A: Full 3K carbon fiber spacers are stiffer and lighter than aluminium equivalents. The reinforced ~1.9mm wall thickness on these spacers ensures they handle standard stem clamping torque without cracking, making them a reliable lightweight upgrade for performance builds.