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28. 6 mm while the external is 34. 9 mm, total weight is about 45 g. Feature of carbon fiber bicycle headset spacer: more resistant to corrosion, harder than aluminum alloy headset spacer, and lighter than aluminum alloy made one.

Using these spacers paired with your existing axle will allow you to achieve the comfort you want. Spacer kit with 3, you'll find the perfect balance of fit and function for your bicycle's performance.
Diameter of 1 & 1/8" 28. 6mm: this kit includes everything you’ll need to give your bike a longer ride. Only compatible with Spank Spacer 1 and 1/8” 28. 6mm diameter headsets. Recommended for: all mountain, E-Bike, enduro, trail, XC, DH, free ride, Gravel.


You can combine them freely to meet your different needs. Compared with aluminum alloy bike stem spacers, it’s more hard, better strength, more friction resistance and high corrosion resistance.2

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.


Application this reducer allows you to use smaller diameter standard size handlebars in an oversize stem. Materialmade of aluminium alloy material, very lightweight, not easy to rust or fade, corrosion resistant and durable.

1. Sumind
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7 Size, Sumind 11 Pieces Bike Carbon Fiber Headset Spacer Bicycle 1-1/8 Inch 20 15 10 5 3 2 1 mm
#adSumind #ad - Size detail: inner diameter is approx. Multi-size package: this package contains 7 different sizes, 15 mm, 1 mm, 5 mm, 10 mm, 20 mm, 3 mm, 2 mm, small size of spacer headset let you have a more precise height adjustment.28. 6 mm while the external is 34. 9 mm, total weight is about 45 g. Feature of carbon fiber bicycle headset spacer: more resistant to corrosion, harder than aluminum alloy headset spacer, and lighter than aluminum alloy made one.
More information #ad
Appearance and performance: automatic cutting, fit most of the road bicycles, smooth edge, delicate texture and durable to use. Material of bike handlebar spacer: woven carbon, nice look and good quality, light weight, good strength and well temperature resistance, good impact resistance.Brand | Sumind #ad |
Manufacturer | Sumind #ad |
Part Number | Sumind-Headset Spacer-01 |
More information #ad
2. Spank
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Bike Headset Spacer, 3/6/12mm Bike Headsets & Accessories, Aluminium Alloy Bike Stem Spacers for MTB BMX Mountain Road Bikes, Spank Spacer Kit Orange, Bicycle Headset Spacer for 1 & 1/8 Inch Stem
#adSpank #ad - It includes 3mm, 6 & 12mm headset spacer rings: with spank Spacer Kit, 6mm and 12mm headset spacer rings. Greatly improve the fit and function of your headset with an affordable and stylish kit.Using these spacers paired with your existing axle will allow you to achieve the comfort you want. Spacer kit with 3, you'll find the perfect balance of fit and function for your bicycle's performance.
More information #ad
Brushed anodized with laser logo 12mm spacer ring: Spank Spacer Kit for Bicycle is designed to make your ride a bit more comfortable. Dial your fit with spank industries headset spacer kit: Make your ride special with the Spank Industries spacer kit for bicycles. Diameter of 1 & 1/8" 28. 6mm: this kit includes everything you’ll need to give your bike a longer ride. Only compatible with Spank Spacer 1 and 1/8” 28. 6mm diameter headsets. Recommended for: all mountain, E-Bike, enduro, trail, XC, DH, free ride, Gravel.
Brand | Spank #ad |
Manufacturer | The Gravity Cartel #ad |
Weight | 0.04 Pounds |
Part Number | EXT5005 |
Model | EXT5005 |
More information #ad
3. CyclingDeal
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3mm, CyclingDeal Alloy Road Bike Bicycle MTB Fork Steerer Headset Spacers 1-1/8" 9PCS Kit Set 2mm, 10mm, 5mm, 15mm
#adCyclingDeal #ad - Package: 1 x 2mm, 3 x 10mm, 1 x 3mm, 3 x 5mm, 1 x 15m. Specs: fit size: 1-1/8" fork steerer tube. Quality material: print-black alloy material offers incredible strength, good temperature resistance, lightweight and sleek looking. Order now, worry free! we're so confident about our product quality that we can provide a 1-year warranty!9 piece kit: 5 sizes, 9 pieces to get a wide range of height combinations to set the optimal position for best riding performance.More information #ad
Universal fit: suitable for 1 1/8"28. 6mm fork steerer tube of most mountain bike, road bike, BMX, MTB, touring bike and etc.Brand | CyclingDeal #ad |
Manufacturer | CyclingDeal #ad |
Height | 1.57 Inches |
Length | 1.97 Inches |
Width | 1.57 Inches |
Part Number | ASP-P1 |
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4. ONGHSD
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ONGHSD 9 Pieces/Set Carbon Fiber Bike Headset Spacer Kit 1/2/3/5/8/10/15/20/30mm MTB Bike Headset Rings Bicycle Headset Spacer Kit Fits for 1 1/8 Inch Road Mountain Bike Stem Spacers
#adONGHSD #ad - Made of woven carbon fiber, nice appearance, lightweight and well temperature resistance. Smooth incision edge offers high tightness. Small size spacer let you have a more precise height adjustment.You can combine them freely to meet your different needs. Compared with aluminum alloy bike stem spacers, it’s more hard, better strength, more friction resistance and high corrosion resistance.2
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28. 6mm, mtb bike, like mountain bike, road bike, external is 34.9mm. This headset spacer set fits for 1-1/8" bike headset stem. Universal for most bicycle, BMX and etc. Inner diameter is approx. 9 pieces of 9 height size. This headset spacer kit contains 9 different height sizes: 1 mm, 5 mm, 8 mm, 2 mm, 10 mm, 3 mm, 15 mm, 20 mm, 30 mm.Brand | ONGHSD #ad |
Manufacturer | ONGHSD #ad |
Part Number | C10HSD |
More information #ad
5. Pimoys
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Pimoys 12 PCS Bicycle Headset Spacer Bike Handlebar Stem Spacers Threadless Aluminum Alloy Headset Stem Spacer Set Fit 1 1/8-Inch Stem 2/3/5/10mm for MTB BMX Mountain Road Bikes Black
#adPimoys #ad - Package:12 pcs bike handlebar spacers in 4 sizes 2mm / 3mm / 5mm /10mm,3 PCS each size, multi-size for you to adjust the appropriate height. Lightweight: 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.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.
More information #ad
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, mountain bike, BMX, road bike etc. Notes: if you go for heavy duty off road ride, smooth edge, durabale due to automatic cutting, you should use aluminum spacers rather than carbon spacers, fit most of the road bicycles.Brand | Pimoys #ad |
Manufacturer | Pimoys #ad |
Part Number | D535N |
More information #ad
6. Kbrotech
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Kbrotech Bicycle Headset Spacer Aluminium Alloy Bike Stem Headset Spacers Fork Washer Fit for 1 1/8-Inch Stem 2mm 5mm 10mm 8pieces Aluminum Alloy
#adKbrotech #ad - 8pieces aluminum headset spacers 2mmx2, 5mmx3, 10mmx3. Spaces Inside diameter:28. 6mm. 3 different size2mm/5mm/10mm, they could fit for your demand and meet different needs.More information #ad
Made of high-quality aluminum alloy material, CNC finished. Lightweight and easy to install. Help to raise your handlebar. Fit for 28. 6mm front stem fork of MTB, mountain bike, BMX, road bike etc.Brand | Kbrotech #ad |
Manufacturer | Kbrotech #ad |
Part Number | 008 |
More information #ad
7. Saipe
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Saipe 1Pair Bike Handlebar Shim Bicycle Handlebar Stem Shim Handle Bar Adapter Reducer Aluminum Alloy Clamp Spacer Conversion Shims 25.4 to 31.8MM Cycling Parts Components
#adSaipe #ad - Increase riding safety protection. Wavy designthe wavy design on the surface not only does not damage the handlebars and stems, but also increases the friction of the product.Application this reducer allows you to use smaller diameter standard size handlebars in an oversize stem. Materialmade of aluminium alloy material, very lightweight, not easy to rust or fade, corrosion resistant and durable.
More information #ad
Stylingcnc cutting with smooth surface and edges; the surface is anodized with bright colors and luster, making your bike more cool and fashion. If your handlebar diameter is 25. 4mm and the stem diameter is 31. 8mm, then you can use "25. 4 to 31. 8mm" handlebar shim as a conversion. Easy to installinstallation is simple and quick, directly buckled in the handlebar installation position.Brand | Saipe #ad |
Manufacturer | Saipe #ad |
Part Number | GMD0162 |
Model | GMD0162 |
Warranty | NOT |
More information #ad
8. Platt
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PLATT Bike Headset Spacer 7PCS Aluminium Alloy MTB Road Bike Stem Headset Spacer Fit 1 1/8-Inch Stem 2/3/5 /10mm Black Headset Spacer with Top Cap
#adPlatt #ad - Package included: 1*2mm, 1*3mm, 1*5mm, 4*10mm, 1* Top Cap 8Pcs. Use for 1-1/8" 28. 6mm front Stem Fork. Multi-size for you to adjust the appropriate Height, Small Size of Spacer Headset Let You Have a More Precise Height Adjustment.More information #ad
Comes anodized in black, ultra precision Diamond Blade Machine Cut, Colorfast Surface, Fit All Road /Mountain Bikes. Material :quality aluminum alloy, Great Anti-corrosion and Lightweight, Only about 52g 8PCS.Brand | Platt #ad |
Manufacturer | PLATT #ad |
Part Number | ZXC047 |
More information #ad