Best Bike Headset Spacers of 2026

"I got these spacers because I needed to fine-tune my handlebar height on a new fork. The variety of sizes was perfect and I had plenty of options to get everything set just right. Plus, the price was great for so many pieces."

"After swapping out my heavy aluminum spacers, these carbon ones made a huge difference—super light and look amazing with a real carbon pattern. They fit well and definitely add a nice touch to my bike."

"I’m really impressed with the solid build and quality of these headset spacers. The only thing I’d point out is that shipping took a bit longer than expected, but that’s understandable these days. Overall, very happy!"

"I used these spacers to fix a warped, over-torqued washer inside my cassette. The kit includes various sizes, so I easily found the right fit for my needs, and the red one adds a cool touch when visible."

"When I installed a wider range 8-speed freewheel on my eBike, the derailleur wouldn’t line up because the new freewheel didn’t sit out as far. Finding these spacers was a relief—just one solved my problem perfectly."

"There are times when a cassette doesn’t fit tightly on a hub, like an HG cassette on an HG+ hub. That’s when these spacers come in handy, offering multiple thicknesses beyond the standard 1.6mm so I can get the right fit."

"I was unsure if this headset would fit my KHS Alite 150, but it turned out to be a perfect match. After careful installation and a test ride, I had to tighten it once, but now it feels smooth and solid on the road."

"I ordered the 44 mm set as described, but both bearings were for 32 mm, despite the packaging. This may cause compatibility issues for some users."

"When I received this headset, the bearings and sleeves appeared used and dirty. There was even grit in the bearing balls. I ended up discarding everything and purchasing a new set locally."

"These spacers were the perfect fit for my new forks, letting me adjust the height exactly how I wanted. I also appreciate that the package came with a generous assortment of spacers, and they really look awesome on my bike."

"I honestly believe these aren't just spacers—they're exceptionally lightweight and exquisitely designed. The weight savings are remarkable, to the point where my bike feels almost ethereal. As a cyclist who really values performance, I find these to be the ideal upgrade for anyone who wants something special."

"I was concerned after reading about potential diameter issues, but with my FSA headset, these spacers matched perfectly and gave my bike a clean, finished look. No sizing problems at all for me."

"I wanted to fine-tune my bike’s cockpit and these carbon fiber spacers were exactly what I needed. The fit was precise with no slop, the matte finish looked sharp, and the variety of sizes made adjustments easy. Compared to aluminum spacers, these felt like a genuine upgrade—lighter and more refined. The value in this 11-piece set is outstanding. If you want to customize your fit with quality parts, I’d recommend these without hesitation."

"As a home mechanic, I was looking for headset spacers with both top-notch durability and a flawless finish for my fatbike build. This 11-piece carbon set really impressed me: the snug fit gave my stack total stability, no wobble, and the matte carbon look blended perfectly with my bike. Installation was easy with no burrs or scratches. It’s a professional upgrade over standard aluminum spacers—highly recommended for MTB, road, or fatbike setups."

"I used this kit to replace the headset spacers on my ebike, and it made a huge difference. Having 1, 2, and 3mm spacers in addition to the standard sizes let me dial in the exact stack height I needed with zero play or gaps. The matte carbon finish looks awesome, and the fit was just right. This kit really saved me a lot of hassle."

"These spacers are exactly as advertised—carbon fiber, lightweight, and look great on my bike. I appreciate the range of sizes, which made it easy to achieve the perfect handlebar height."

"The variety in this set is outstanding—I even got 1mm and 2mm spacers, which I've never seen before. This made fine-tuning my setup much easier."

"With these spacers, I was able to eliminate the wobble from my forks, which was exactly what I needed."

"I picked up a recertified Wahoo Kickr Core that didn't include the 1.8mm spacer. This spacer was exactly what I needed to adapt my 11-speed hub to fit a 9-speed cassette. With this installed, my shifting returned to normal and everything runs super smooth—no extra spacers or adjustments required when swapping between my wheel and trainer!"

"After buying a wheel set that supports up to 11-speed cassettes, my 9-speed was loose and wobbly. This spacer provided a solid metal fit and fixed the issue completely. Now my 9-speed cassette sits perfectly and no longer shifts or moves."

"I needed to secure a 10-speed Shimano cassette on my Wahoo Kickr Core freehub. The 2mm spacer was too thick, but this one fit perfectly. It positioned the cassette just right and solved all my problems."

"As someone who’s always fixing bikes for my kids and myself, I appreciate how these bearings fit perfectly into various bicycle models and are made from durable, high-quality materials. They provide smooth operation and are definitely worth the price for anyone who needs reliable repairs on hand."

"I keep this set around for emergencies because one of the included sizes always gets me back on the road. For the cost, it’s a great investment."

"No sabía el tamaño exacto que necesitaba, pero este kit lo tiene todo, así que me facilitó mucho las cosas al contar con todas las opciones."

"I was really impressed with how these spacers fit perfectly and worked exactly as needed. They blend well with my older polished rings, letting me create new looks. My bike feels much more stable on rough trails now and it helped prevent bearing damage. Just be sure to check your fork stem diameter before buying."

"I bought these spacers because they were the most affordable option and I’m totally satisfied. They’re functionally the same as any other spacer I’ve used, so I think they’re a great choice for anyone looking to save money."

"Honestly, these spacers are spot-on in size and finish. They do their job without looking cheap, which is all I could ask for. At this price, they’re a no-brainer. Highly recommended for anyone needing solid headset spacers."

"I had a problem with my Aventon Adventure 2 e-bike where tightening the headset bolt didn't get rid of the wobble. Adding one of these spacers fixed the issue instantly and saved me a trip to the bike shop. For just a few dollars, these spacers made a huge difference."

"I really like that this kit comes with a variety of sizes, which made adjusting my handlebar stem height simple. Everything fit well and installation was straightforward."

"I used these spacers while rebuilding two threadless forks. They're much lighter than the original spacers, and the fit was spot on. Although they don't feel as sturdy as some, they get the job done without adding extra weight."