Best Bike Headset Spacers for Road Bikes of 2025

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Bike headset spacers are an important component of any road bike, as they allow for fine-tuning of the handlebar height and positioning. These small, cylindrical pieces fit over the steerer tube of the fork and underneath the stem, providing additional height and adjustability to the handlebars. Made from lightweight materials such as aluminum or carbon fiber, headset spacers come in a variety of sizes and colors to match the style of the bike. Whether you're a competitive cyclist looking to shave off seconds from your time or a casual rider seeking a more comfortable riding position, bike headset spacers are a versatile and essential accessory for any road bike.
At a Glance: Our Top Picks
Top 10 Bike Headset Spacers for Road Bikes
Sumind 11 Pieces Carbon Fiber Bike Headset Spacer Set
The Sumind 11 Pieces Bike Carbon Fiber Headset Spacer Set includes 7 different sizes of spacers, made of woven carbon material. These spacers are light in weight, corrosion-resistant, and have good temperature resistance. The set is designed with smooth edges and a delicate texture, making it durable to use. The spacers also allow for precise height adjustments and fit most road bicycles with an inner diameter of 28.6 mm and external diameter of 34.9 mm. The total weight of the set is approximately 45 g.
HOUSON 50mm Bicycle Headset Spacer
The HOUSON Headset Spacer offers a convenient solution for adjusting your bicycle handlebars to the perfect height. This 50mm spacer is designed to enhance your riding comfort, allowing you to find the ideal position that suits your style. With an inner diameter of 28.6mm and a sturdy 3mm wall thickness, it ensures durability and a smooth finish, preventing any peeling. Its lightweight construction means you won’t feel weighed down while riding. Plus, this versatile spacer is compatible with a wide range of bicycles, including mountain bikes, road bikes, and BMX, making it a great addition to any bike setup.
Fengek 15 Pcs Carbon Fiber Headset Spacer Kit for Bicycle
The Fengek 15 Pcs Headset Spacer for Bicycle is a premium quality product made of carbon fiber with 7 different sizes, 1-1/8 inch stem and well temperature and impact resistance. These lightweight and durable spacers are perfect for most bicycles including mountain and road bikes, providing a safer riding experience. The automatic cutting technology guarantees a smooth edge and delicate texture, making this accessory a long-lasting solution for amateur riders.
VANSIHO Carbon Fiber Headset Spacers
The VANSIHO Headset Spacers are a versatile set of 11 carbon fiber spacers available in seven different thicknesses. This variety allows you to customize your bike’s fit to enhance comfort during rides. Made from high-quality carbon fiber, these spacers are both lightweight and durable, ensuring they won't easily deform over time. They are designed to fit most road, mountain, and BMX bikes, making them a practical choice for many cyclists. Installation is straightforward, requiring no special tools—just replace your original headset cap and tighten the bolts to get started.
EMVANV 8pcs Carbon Fiber Bicycle Spacers
The EMVANV Bicycle Stem Spacers come with eight pieces in four different sizes (2mm, 3mm, 5mm, and 8mm), allowing you to customize your bike's height to fit your riding style perfectly. These spacers are designed to be used with headsets, stems, and forks, giving you flexibility and precision for your cycling needs. With an inner diameter of 28.8mm, they fit most bikes, including road and mountain bikes. Made from lightweight and durable carbon fiber, these spacers provide strength and resistance to impact, making them an excellent choice for avid cyclists.
PLATT Bike Headset Spacer 7PCS Aluminium Alloy
PLATT Bike Headset Spacer is a set of 7 spacers that can be used to adjust the appropriate height of your bike. Made of quality aluminum alloy, it is lightweight and has great anti-corrosion properties. The spacers come in multiple sizes and can be used with all road and mountain bikes. The small size of the spacer headset allows for more precise height adjustment. The set comes with a top cap and is anodized in black with a colorfast surface.
GooDay Bicycle Headset Spacer Set
The GooDay Bicycle Headset Spacer Set is a must-have accessory for any cyclist. This set includes 8 spacers in 4 different sizes, allowing you to adjust the height of your handlebars to suit your riding style. Made from black anodized aluminum alloy, these spacers are not only eco-friendly but also sturdy and durable. With an inner diameter of 28.6mm, they are compatible with most MTB, BMX, mountain, and road bikes. The lightweight design and easy installation make these spacers a convenient choice. Additionally, the aluminum construction makes them more resistant to corrosion compared to carbon fiber spacers. Whether you're a casual rider or a hardcore off-roader, the GooDay Bicycle Headset Spacer Set is a reliable and versatile option for enhancing your biking experience.
LLOUSSAK 11 Pcs Carbon Fiber Headset Spacers
The LLOUSSAK Headset Spacers kit includes 11 spacers in various sizes, ensuring you have the right fit for your bicycle. Made from lightweight and durable carbon fiber, these spacers are designed to withstand the rigors of outdoor cycling while maintaining their shape. The finely crafted edges and textured surface enhance performance, making them a reliable choice for cycling enthusiasts. With a standard inner diameter of 1-1/8 inches, these spacers are compatible with most mountain and road bikes, providing versatility for your biking needs. Remember to check your size before purchasing for optimal results.
CyclingDeal Alloy Bike Fork Steerer Headset Spacers Kit Set
The CyclingDeal Alloy Bike Fork Steerer Headset Spacers Kit Set is a 9-piece kit of print-black alloy material that can fit most mountain bikes, road bikes, MTB, BMX, touring bikes, and more, with a 1-1/8" fork steerer tube. The 5 sizes and 9 pieces provide a wide range of height combinations to set the optimal position for best riding performance. It is lightweight, sleek-looking, and offers good temperature resistance.
Saipe Aluminium Alloy Bicycle Headset Spacer Kit
The Saipe Headset Spacer Kit is a versatile accessory for your bike. With its high-quality aluminum alloy construction, it provides strength and durability while remaining lightweight. The kit includes four different sizes of spacers, allowing you to adjust the height of your handlebars for a more comfortable riding position. The black anodized treatment not only adds a touch of style but also ensures that the color won't fade over time. Additionally, the kit comes with a headset star nut, stem top cap, and headset bolt, providing everything you need for easy installation. Upgrade your bike with the Saipe Headset Spacer Kit and enjoy a smoother and more enjoyable ride.
Frequently Asked Questions (FAQs)
1. What size headset spacers do I need?
When choosing headset spacers the most important thing is to match the size to the diameter of the fork steerer tube. The most common steerer diameters are 1”,1 1/8”, 1.5” and tapered.
2. Can you put spacers under the headset?
You CANNOT put spacers under the head tube. The bottom cup of the headset has to fit snugly in the head tube, and the steer tube of a fork is a little broader at the bottom to fit the base plate of the headset. There's no safe way to change these relationships.
3. How tight should headset spacers be?
A god rule of thumb is to tighten your headset cap bolt until it is causing some friction with steering and then back it off until it's tight enough to keep the stack neatly in place. This is typically 1/8th to 1/4 of turn. Give your headset spacers a twist. You should not be able to move them much, if at all.
4. Do you need spacers on steerer tube?
The clamp bolts of the stem on the steerer tube in a threadless headset setup are what holds the whole assembly together. Spacers below the stem are required to eliminate vertical play. Spacers above the stem are only required for aesthetics.
During our bike headset spacer for road bikes research, we found 24 bike headset spacer for road bikes products and shortlisted 10 quality products. We collected and analyzed 21,559 customer reviews through our big data system to write the bike headset spacers for road bikes list. We found that most customers choose bike headset spacers for road bikes with an average price of $8.50.
The bike headset spacers for road bikes are available for purchase. We have researched hundreds of brands and picked the top brands of bike headset spacers for road bikes, including Sumind, HOUSON, Fengek, VANSIHO, EMVANV. The seller of top 1 product has received honest feedback from 550 consumers with an average rating of 4.9.

Jason Kiser is an editor who lives in California, he previously worked in a travel agency for ten years, which enabled him to travel a number of interesting countries and experience several different cultures along the way. His range of job and travel experiences grant him expertise in hiking, camping, outdoors and fitness.