Best Mountain Bike Headset Spacers in 2025

4 different height 1-1/8" spacers and a top cap, all with Race Face logos

Choose aluminum or ultralight carbon

DIAL YOUR FIT WITH SPANK INDUSTRIES HEADSET SPACER KIT: Make your ride special with the Spank Industries spacer kit for bicycles. Greatly improve the fit and function of your headset with an affordable and stylish kit.

BRUSHED ANODIZED WITH LASER LOGO (12MM SPACER RING): Spank Spacer Kit for Bicycle is designed to make your ride a bit more comfortable. Using these spacers paired with your existing axle will allow you to achieve the comfort you want.

SPACER KIT WITH 3, 6 & 12MM HEADSET SPACER RINGS: With Spank Spacer Kit, you'll find the perfect balance of fit and function for your bicycle's performance. It includes 3mm, 6mm and 12mm headset spacer rings.

Add personality & style to your bike with this precision engineered and machined stem cap and spacer kit.

Kit includes: 3mm, 5mm, 10mm, & 15mm headset spacers Ultralight stem cap with an integrated 5mm spacer 4 matching aluminum water bottle cage bolts Black aluminum stem cap bolt

1 1/8" top (straight 1 1/8" or 1 1/2" to 1 1/8" taper) steerer tubes only

Universal Fit: Suitable for 1 1/8"(28.6mm) fork steerer tube of most mountain bikes, road bikes, MTB, BMX, touring bikes and etc.

Full Carbon Fiber: Woven carbon fiber material offers incredible strength, and good temperature resistance, exceeding lightweight and sleek looking.

10 Piece Kit: 6 sizes, 10 pieces to get a wide range of height combinations to set the optimal position for best riding performance.

1-1/8" Headset Spacer Set. Inside diameter:28.6mm

The Bike Headset Spacer is made of high-quality aluminum alloy material, eco-friendly, sturdy and durable to use.

Lightweight and easy to install, having advantages of smooth surface and exquisite workmanship.

Multi-size selection: come with 5 different size, including 2 mm (1 piece), 3 mm (1 piece), 5 mm (3 pieces), 10 mm (3 pieces), 15 mm (1 piece), multi-size for you to adjust the appropriate height

Material: the bicycle headset spacer is made from carbon fiber material, sturdy and durable to use, looks very nice

Resistant to corrosion: carbon fiber bicycle headset spacer is more resistant to corrosion, more hard than aluminum alloy headset spacer, and lighter than aluminum alloy spacer

Why aluminum? Firstly, the difference in weight between 20mm of carbon spacers vs alloy spacer is far, far less than 1/2 ounce. It may be a gram or two. Secondly, The only glossy woven carbon part on the bike are the spacers looked weird. Thirdly, cheap carbon fiber spacers cannot meet the strength requirements of the high stress parts for sports bikes, experts recommended Tensile modulus 200-280Gpa, Tensile Strength 2500Mpa at least. Cheap CF spacers is fragile and even not cut evenly.

Why u need bike headset spacers ? Put simply, headset spacers enable you to easily adjust the height of your handlebars, which is an essential element of bike fit for MTB, BMX and road riders. In the particular case of the latter (road cycling), the correct bar height is key for comfort and performance.

Why 6 piece? The 2 mm, 3 mm, 5 mm, 10 mm spacers make it easy to have a precise height adjustment, the six piece of spacer can add 40mm height totally, that enough for most situations. If you just need 20mm or 25mm, you can still have some backup for more inflexible.

Use for 1-1/8" (28.6mm) Front Stem Fork.

Material :Quality Aluminum Alloy,Great Anti-corrosion and Lightweight, Only about 52g (8PCS)

Comes Anodized in Black,Colorfast Surface,Ultra Precision Diamond Blade Machine Cut, Fit All Road /Mountain Bikes

Fit steerier tube diameter: 1-1/8", 28.6mm stems and forks

Material: Alloy Aluminum MTB BMX Road Bike Stem Spacer, Headset Top Cap,Stainless Steel Headset Star&Bolt

Lightweight and easy to install, having advantages of smooth surface and exquisite workmanship.

* High-quality Material-- Our bike cassette spacers constructed of aluminium alloy, the brand new gasket is anti-rust, long service life.

* Easy to install-- The bicycle speed cassette freehub spacer is lightweight and portable, easy to install and remove quickly, time saving, your best choice.

* Good performance-- Our bike headset spacer perfect for adjusting your bike bottom bracket, flywheel or hub, 3 sizes included, meet your needs.

✅ MATERIAL - Bicycle headset spacers threadless are made of black anodized aluminum alloy material with smooth surface and exquisite workmanship, eco-friendly, sturdy and durable to use

✅ MULTI SIZE - This package contains 3 different sizes: 2mmｘ4, 5mmｘ4, 10mmｘ4. Small size of spacer headset let you have a more precise height adjustment

✅ SIZE DETAILS - Stem spacers road bike inner diameter is 28.6mm，1-1/8" headset spacer set, compatible with 28.6mm front stem fork of MTB, BMX, mountain bike, road bike, etc

[Four Different Size]: There are 4 different size(5mm/10mm/15mm/20mm) into the pack, providing various combination to adjust height of handlebars to fit your riding style

[Multiple Colors]: This fork washer is available in 4 colors, you can choose the color you like best, smooth surface and exquisite workmanship will make your bike looks cool

[Easy to Install and Lightweight]: The headset spacers are very lightweight, easy to install on your bike, and it won't add any burden to your bike, you will feel comfortable when riding

🥭 MYLTI-SIZE PACKAGE: 12 Pcs bicycle handlebar spacers are available in 3 sizes 2mm / 5mm /10mm, 4 Pcs each size, provide various combinations to adjust the height of the handlebar to suit your riding style

🥭 MATRERIAL: Bicycle headset spacers are made of 6061 aviation aluminum alloy, CNC finished. Lightweight, smooth surface, exquisite workmanship, sturdy and durable to use

🥭 FEATURES: Aluminum headset spacer is easy to install, corrosion-resistant, more sturdy and durable, suitable for most bicycles

Designed to work with threadless headsets

Adjust and fine tune your handlebar position with headset spacer kit

Each set contains 4 spacers (3mm/5mm/10mm/15mm)

QUALITY MATERIAL: Our headset spacer is made of high-quality aluminum alloy material, eco-friendly, sturdy and durable to use.

EASY TO INSTALL:The headset spacer is lightweight and easy to install, having advantages of smooth surface and exquisite workmanship.

SUITABLE FOR MOST BIKES: Perfectly suitable for 28.6mm front stem fork of MTB mountain bike, road bike etc.Available in 4 colors, just choose the color you like.

Multi-Size: This package contains 8 different sizes, 1mm, 2mm, 3mm, 5mm, 8mm, 10 mm,15 mm, 20 mm, small size of spacer headset allows you to adjust more accurately.

Materials: Woven carbon fiber, woven carbon, heat-resistant, impact-resistant, sturdy and durable, beautiful appearance, light weight.

Feature: Carbon fiber headset spacer resistant to corrosion, more sturdy, durable, Lighter and harder than aluminum alloy headset spacer.

ECO-FRIENDLY & DURABLE: The bicycle headset spacer set are made of high-quality aluminum alloy material, which is eco-friendly, sturdy and durable to use for a long time

SUPER LIGHTWEIGHT: The headset spacers are very lightweight, easy to install on your bike, and it won't add any burden to your bike, you will feel comfortable when riding

MULTIPLE COLORS: This fork washer is available in 4 colors, you can choose the color you like best, smooth surface and exquisite workmanship will make your bike looks cool

Package：Contains 8 different sizes, 1 mm, 2 mm, 3 mm, 5 mm, 8mm, 10 mm, 15 mm, 20 mm, multi-size of spacer headset let you have a more precise height adjustment.(8 Pieces)

Material: Boenoea Bike Headset Spacer is made from carbon fiber material, nice look, sturdy and durable to use.

Feature: Automatic cutting, smooth edge, well temperature resistance, good impact resistance, delicate texture and durable to use.

1-1/8" Headset Spacer Set. Inside diameter:28.6mm. Color : Black

Made of high-quality aluminum alloy material,CNC finished.

Package include 4 x 5mm/ 4 x 10mm

★Size：Stem spacers road bike inner diameter is 28.6mm，1-1/8" headset spacer set, compatible with 28.6mm front stem fork of MTB, BMX, mountain bike, road bike etc.

★Material : Aluminum Alloy MTB Headset Spacer,Stainless Bicycle Fork Headset Star Nut, Titanium Bolt .Bicycle headset spacers threadless are made of black anodized aluminum alloy material with smooth surface and exquisite workmanship, eco-friendly, sturdy and durable to use

★Exquisite Workmanship:The Bike Top cap Comes anodized in Black, Blue, Yellow and Red,colorfast surface,Ultra Precision Diamond Blade Machine Cut,great anti-corrosion. Beatiful Color,Stand out from the crowd.

Package Contain:16Pcs Bicycle Headset Spacer in Total.Blue:10mm(4pcs)+5mm(2pcs),Red:10mm(4pcs)+5mm(1pcs),Gold:10mm(4pcs)+5mm(1pcs).Provide various combination to adjust height of handlebars to fit your riding style.

Material: Bicycle headset spacers threadless are made of black anodized aluminum alloy material with smooth surface and exquisite workmanship

Stem spacers road bike inner diameter is 28.6mm，1-1/8" headset spacer set, compatible with 28.6mm front stem fork of MTB, BMX, mountain bike, road bike etc

HIGH QUALITY MATERIA: This product is made of high quality aluminum alloy material, eco friendly, sturdy and durable to use

EXQUISITE DESIGN: The headset spacer is lightweight and easy to install, having advantages of smooth surface and exquisite workmanship.

SUITABLE BIKE: This product is perfectly suitable for 28.6mm front stem fork of MTB mountain bike, road bike etc.

☆【Premium Quality】: This 100% brand new headset spacer is made of high-quality aluminum alloy material, which is sturdy and durable in use. It is not easily damaged and oxidized, has reliable quality and long service life.

☆【Exquisite Workmanship】: This front fork headset washer adopts excellent manufacturing process, which is lightweight and easy to install, having the advantages of smooth surface and exquisite workmanship.

☆【Fitment】: This bike front stem fork washer is perfectly suitable for 28.6mm front stem fork of MTB mountain bike, road bike etc, which is an ideal accessory for your bicycle.

💀Appearance and performance: Replace the ordinary monotonous washers, add a color to your bike, the color is more diverse. bike, the color is more diverse

💀Feature: Aluminum headset spacer is lightweight and easy to install. Resistant to corrosion, more sturdy and durable than carbon fiber headset spacers, fit most of the bicycles.

💀Multicolor to Choose: 4pcs in one pack, available in 5 colors, just choose the color you like.

. Replace monotonous washers, your bike, the color is more diverse

. Lightweight and easy to install

. 4pcs in , available in , just choose the color you like

Package Content: You will get 18 pieces of bicycle headset spacers. There are 4 sizes in total: 9 pieces of 10mm/0.4inch, 3 pieces of 5mm/0.2inch, 3 pieces of 3mm/0.1inch, and 3 pieces of 2mm/0.08inch. This size and quantity can meet your daily needs.

Premium Material: Our bike handlebar stem spacer is made of quality aluminum alloy, which is very strong and not easy to wear and tear, you can rest assured to use it for a long time.

Easy to Install: This makes the bike headset spacer very easy to install, not easy to deform, can effectively adjust your grip, and it is suitable for most bikes.

1.Package including: Total have 11pcs Carbon Fiber Bike Fork Washers. 7 sizes of spacers, they are 1 mm, 2 mm, 3 mm, 5 mm, 10 mm, 15 mm, 20 mm. You can match them to any height you want. They are 2 x 1mm, 2 x 2mm, 2 x 3mm, 2 x 5mm, 1 x 10mm, 1 x 15mm, 1 x 20mm.

2.Material: The bicycle headset spacer is made from carbon fiber material, heat-resistant, impact-resistant, sturdy and durable, beautiful appearance, light weight.

3.Size: The inner diameter of the spacer is 28.8 mm and the outer diameter is 34.9 mm, suitable for most bicycles. Suitable for 1 1/8"(28.6mm) fork stem tube of most mountain bike, road bike, MTB, BMX, touring bike and etc.

🌞 Package: 5 PCS bike handlebar spacers, 1* 3mm, 2* 5mm, 2* 10mm, provide various to adjust height of handlebars to fit your riding style.

🌞 Appearance and performance: Automatic cutting, smooth, fit most of the road bicycles, delicate texture and durable to use.

🌞 Material: The bike stem spacers are made of carbon fiber, lighter weight, more resistant to high temperature, and friction.

【Aluminum Alloy Material】-- Bicycle headset spacer is made of high quality aluminum alloy material, sturdy, durable and long service life

【Product Size】-- 50mm/2.0in headset washer for heightening bicycle head tube, suitable for conventional 28.6mm/1.1in front fork

【Main Functiona】-- The washer is a necessary component for loading, and its function is to lock the front assembly with a suitable washer height

Bike headset spacers set fits 1-1/8" great road and mountain bicycles stems and forks. quality, easy install, light weight, nice look.

Bicycle headset cap kits material aluminum alloy MTB headset spacer and top cap,stainless bicycle fork headset star nut and bolt. beatiful design, stand out from the crowd.

MTB bike stem top cap kits, light weight, strong pressure resistance, not easy to deform and 28.6mm diameter is suitable for majority of bicycle headset.