Top 10 Best stem spacers in 2026

Main highlights

• •PRECISION ENGINEERING: Our 8PCS Cheimaxy Carbon Fiber Headset Spacers are designed with a meticulous ±0.1mm variance, ensuring a perfect fit for your bike's headset and maintaining optimal performance without any installation issues
• •UNIVERSAL COMPATIBILITY: These headset spacers fit seamlessly onto any 1 1/8 inch (28.6mm) front stem fork, making them ideal for MTB, BMX, mountain bikes, and road bikes alike. Upgrade your setup with Cheimaxy versatile bike headset spacers
• •CARBON FIBER MATERIAL: These stem gaskets are made of braided carbon fiber, which is high stiffness, high strength and light weight. The matte black appearance of the braided carbon fiber imparts an understated, high-end texture, allowing you to enjoy the perfect combination of aesthetics and functionality
• •DURABLE AND LONG-LASTING: Built to withstand wear and heat, our Bicycle Stem Headset Spacers feature a clean design with no burrs or jagged edges. The flat ports ensure tight top and bottom joints, delivering durability and precision in every ride
• •ADJUSTABLE HEIGHT: Achieve your ideal riding position effortlessly with our 6-size customization option, which includes 2×1mm, 1×2mm, 1×3mm, 1×5mm, 2×10mm, and 1×15mm spacers. Fine-tune your handlebar height with precision down to 1mm for a personalized riding experience

Main highlights

• •Fit for 28.6mm front stem fork of MTB, BMX, mountain bike, road bike etc.
• •8pieces aluminum Headset Spacers 2mmx2,5mmx3,10mmx3.Spaces Inside diameter:28.6mm
• •Lightweight and easy to install.help to raise your handlebar.
• •Made of high-quality aluminum alloy material,CNC finished.
• •3 different size(2mm/5mm/10mm),they could fit for your demand and meet different needs.

Main highlights

• •Compatibility: Featuring a standard 1 1/8 inch (28.6mm) inside diameter, it fits all modern performance bikes, including MTB, road, cruiser, and electric bikes
• •Multi-size Adjustment: This 12 pieces stem spacers kit includes 6 different sizes (1/2/3/5/10/15mm) for precise handlebar height adjustment to fit your riding style. They can be freely combined to meet your specific needs
• •High Strength Carbon fiber: The high stiffness and super lightweight design (45% lighter than aluminum) enhances your bike's performance without compromising strength or durability, while the high corrosion resistance ensures reliable performance in all weather conditions
• •Premium Appearance: The woven carbon texture provides a premium appearance that complements high-end bikes. Each spacer features CNC-machined edges for precise stack alignment
• •Ultimate Riding Experience: Whether you're a competitive cyclist or weekend enthusiast, these bike headset spacers deliver professional-grade performance. The high strength carbon fiber withstands intense off-road use, while its excellent impact resistance and high corrosion resistance ensure reliability in all conditions

Main highlights

Main highlights

• •Package Contents: The package includes 8 headset spacers in 4 sizes (2mm, 3mm, 5mm, 10mm) for versatile bike components and parts adjustments.
• •Durable Material: These bicycle riser spacers are made of durable aluminum alloy, providing a lightweight and rust-proof solution to meet your cycling needs.
• •Scope of Application: Compatible with 1 1/8-inch stems, these headset spacers fit MTB, BMX, mountain, and road bikes, ensuring a perfect match for your bike components.
• •Easy Installation: These bike stem spacers allow for precise height adjustments, enhancing your riding comfort and performance.
• •Wide Application: Ideal for heavy-duty off-road rides, these aluminum headset spacers provide a sturdy and reliable alternative to carbon fiber options.

Main highlights

• •Versatile Package: Includes 8 headset spacers in 4 sizes - 2 pieces each of 2mm, 3mm, 5mm, and 10mm. These bike stem spacers allow for customizable handlebar height adjustments, ensuring a perfect fit for your riding style
• •Durable Material: Crafted from high-quality aluminum alloy, these headset spacers 1 1/8 are smooth surface. Lightweight yet sturdy, they are designed to withstand wear and tear, providing long-lasting performance
• •Easy Installation: Our bike headset spacers are designed for hassle-free installation. They are resistant to deformation, making them suitable for most bicycles, including MTB, BMX, mountain, and road bikes
• •Perfect Fit: The inner diameter of these headset spacers is 28.6mm, compatible with 28.6mm front forks of various bike types. Whether you're riding a mountain bike or a road bike, these spacers ensure a secure fit
• •Wide Compatibility: These bike stem spacers are ideal for a range of models, including BMX, mountain bikes, and road bikes

Main highlights

• •Quantity You Will Receive: Package includes 15pcs headset spacer in 7 sizes, 2 x 1mm, 2 x 2mm, 3 x 3mm, 3 x 5mm, 3 x 10mm, 1 x 15mm, 1 x 20mm. Enough quantity and size for bicycle use. Please be sure of the quantity detail before buying.
• •Premium Quality We Made: These headset spacers are made of carbon fiber, lightweight and long-lasting, strong hardness and not easy to get deformed, high quality product provides more safety condition when riding outside.
• •Exquisite Appearance: Featured with smooth edge by automatic cutting, delicate texture and woven carbon, equipped with well temperature resistance and good impact resistance. These bicycle accessories can be used for a long time.
• •Widely Applied for: Inner diamter- 1-1/8 inch/28.6mm. Suitable for most bicycles, mountain bike, road bike, etc. A needed accessory for riding amateur.
• •Warm Note: Please be sure of the product size before buying. Small parts to stay away from children under 3 year old. If you have any questions, please contact us, we will be delighted to solve your problem.

Main highlights

• •Variety Pack: This set includes 6 aluminum alloy headset spacers in 2mm x1, 3mm x1, 5mm x1, and 10mm x3 sizes to fit most 1 1/8-inch stems
• •Durable Construction: Made from high-strength aluminum alloy for long-lasting performance and rust resistance
• •Universal Compatibility: Designed to work with mountain bikes, road bikes, and other bicycles with 1 1/8-inch stems
• •Easy Installation: Simple and straightforward installation process for quick headset adjustments
• •Lightweight Design: These spacers add minimal weight while providing the necessary support and alignment

Main highlights

• •【Size Variety】 This set includes twelve aluminum alloy headset spacers, specifically 3 pieces each of 2mm, 3mm, 5mm, and 10mm thicknesses. These multiple bicycle stem spacers enable precise micro-adjustments to your handlebar height and stem position. You can achieve the optimal riding posture and comfort level for various cycling disciplines, whether seeking an aggressive stance for road speed or a more upright position for trail control on your mountain bike.
• •【Simple Setup】 Designed for straightforward installation, these headset spacers fit universally onto most steerer tubes. Their precise inner diameter of 28.6mm/1.12in ensures a snug fit around the fork steerer, preventing any play. This user-friendly design saves time during bike assembly, maintenance, or cockpit configuration changes.
• •【Precise Compatibility】 Engineered with a consistent out diameter, these bicycle stem spacers are compatible with the vast majority of threadless headsets found on modern mountain bikes, road bikes. This precise fit ensures the spacers center correctly on the fork steerer, maintaining alignment and contributing to smooth steering operation.
• •【Robust Material】 This durable material is lighter than steel alternatives while maintaining the necessary structural integrity for consistent performance on diverse terrains. Crafted from high-grade aluminum alloy, these bike headset spacers offer a robust construction. The material provides strength without deformation, contributing to reliable steering performance. The machining process ensures consistent dimensions and smooth surfaces for seamless stacking.
• •【Broad Application】 These versatile bike spacers are suitable for numerous cycling contexts. Mountain bikers can use them to fine-tune handlebar height for technical trail control. Commuters adjust for comfort, and riders dial in their preferred bar height. The black finish provides a subtle, professional appearance that integrates well with most bicycle aesthetics.