A strong single speed conversion kit simplifies a multi-speed bike by matching the cassette body, chain line, and riding demands, making it useful for commuters, dirt-jump riders, and riders seeking fewer moving parts. The ten options here range from spacer-and-cog kits for Shimano HG or SRAM-compatible freehubs to dedicated XD/XDR systems and standalone chain tensioners. Important differences include cog size, spacer adjustment, tooth design, material, and whether the kit includes hardware to manage chain tension.
Some products target vertical-dropout frames or require a separate tensioner, while others bundle one. Start by identifying your freehub standard and dropout arrangement, then choose the gear size and chain-retention features that suit your route.
The best single speed conversion kit is the one that matches your freehub and provides dependable chain-line control. For Shimano HG-style bodies, PeakRider, Bibike, Origin8, Reverse, CooMeng, or a compatible tensioner-based setup offer relevant options. Wheels Manufacturing SOLO-XD kits suit XD/XDR hubs, while DMR Simple Tension Seeker addresses traditional vertical-dropout frames.
Look for adjustable spacers, a suitable cog size, narrow-wide or positive-negative tooth profiles, and a tensioner when the frame cannot set chain tension directly.
Single Speed Conversion Kits Compared
How We Compared These Products
We compared dimensions, capacity, materials, compatibility, included components, and care requirements across many Amazon listings. These details matter because the product must fit the available space, intended use, setup requirements, and maintenance routine. After examining the wider field, we selected 10 products from PeakRider, Bibike, DMR, CooMeng, BNYTXV, Origin8, Wheels Manufacturing, and reverse.
The shortlist includes products such as PeakRider Single Speed Conversion Kit for Shimano HG Freehub, Bibike Single Speed Conversion Kit 13T/14T/15T/16T/17T/18T/20T/22T Single Speed Cassette, and DMR Simple Tension Seeker. Every recommendation is tied to information stated for that specific product; unclear or missing features were treated as unknown rather than filled with assumptions.
Detailed Reviews: Best Single Speed Conversion Kit
1. Single Speed Conversion Kit for Shimano HG Freehub
Best for: Aluminum Unibody Strength.
This single speed conversion kit features a unibody design and precision-engraving, reducing weight by 40% for a smoother ride. Its positive and negative tooth design ensures perfect chain engagement, minimizing slack and vibration for quicker acceleration.
Constructed from aluminum with a unibody design, this kit weighs 40% less while maintaining strength. The positive and negative tooth design actively prevents chain drops and ensures precise chain engagement, reducing rotational mass for quicker acceleration and a more responsive feel. It includes 12mm, 5mm, and 7mm spacers, a lock ring, and an 18T cassette.
Product Details
| Brand | PeakRider |
|---|---|
| Color | Black |
| Included Components | 12mm Spacer, 5mm Spacer, 7mm Spacer, Lock Ring, Single Speed Cassette |
| Item Package Dimensions L x W x H | 0.1 x 0.1 x 0.1 inches |
| Manufacturer | PeakRider |
| Material | Aluminum |
| Model | ASSC |
Additional Product Information
| Package Weight | 0.1 kg |
|---|---|
| Size | 18T |
| Warranty Description | Limited warranty for 12 months |
Pros
- 40% lighter unibody design
- Precision-engraved for strength
- Positive/negative tooth design prevents drops
- Minimizes slack and vibration
Cons
- Limited warranty for 12 months
Ideal for riders seeking a lighter, more responsive single speed setup. Ensure compatibility with your Shimano HG freehub before purchase.
2. Bibike Single Speed Conversion Kit 13T/14T/15T/16T/17T/18T/20T/22T Single Speed Cassette & Spacers
Best for: Stainless Steel Cassette Versatility.
This single speed conversion kit offers a high-resistant stainless steel cassette compatible with Shimano or Sram 8 to 11 speed HG cassette bodies. It supports a wide range of chain widths, from 1/2" ×3/32" to 1/2" ×11/128", ensuring broad applicability.
The kit includes a 17T high-resistant stainless steel cassette and a set of 6061 aluminum alloy spacers (10mm, 5mm, 3.7mm, 2mm) along with a lock ring. It is compatible with Shimano or Sram 8 to 11 speed HG cassette bodies and chains from 6 to 11 speed. The total weight is a mere 78.6g, making it a lightweight option.
Product Details
| Brand | Bibike |
|---|---|
| Case Material Type | Aluminum or Alloy Steel |
| Color | black 20t |
| Item Weight | 78.6 g |
| Manufacturer | Bibike |
| Part Number | cassettes21-bk20 |
| Material | Alloy Steel, Aluminum |
Pros
- High-resistant stainless steel cassette
- Compatible with Shimano/Sram HG bodies
- Supports 6-11 speed chains
- Includes multiple spacer sizes
Cons
- Only one cassette size (17T) included
A versatile option for converting mountain and road bikes to single speed. Best for those needing broad chain and hub compatibility with a durable steel cassette.
3. DMR Simple Tension Seeker
Best for: Vertical Dropout Frame Conversion.
This single speed conversion kit efficiently converts traditional vertical dropout frames to single speed bikes without requiring a new wheel. It is designed for optimal performance in street and dirt jump cycling environments.
Constructed from stainless steel, this tensioner weighs 3.6 oz (103 g) and is specifically designed to convert traditional vertical dropout frames to single speed. It offers an efficient and straightforward method for conversion, eliminating the need to purchase an entirely new wheel. The kit is recommended for street and dirt jump cycling.
Product Details
| Brand | DMR |
|---|---|
| Included Components | Single-Speed Tensioners |
| Item Weight | 1.92 ounces |
| Load Capacity | 4E+2 lbf (1779 N) tensile load capacity |
| Manufacturer | ディーエムアール(DMR) |
| Material | Plastic |
| Model | DMR-TENS-SIMP-TWN |
Additional Product Information
| Recommended Uses | Street and dirt jump cycling |
|---|
Pros
- Converts vertical dropout frames
- Efficient single speed conversion
- Durable stainless steel construction
- Suitable for street/dirt jump
Cons
- Weight is 3.6 oz (103 g)
An effective solution for riders with vertical dropouts looking to convert to single speed. Not ideal for those prioritizing the absolute lightest components.
4. 16T Single Speed Conversion Kit & Chain Tensioner Bundle – Complete DIY Upgrade Set for Shimano HG Hubs, CNC 7075 Aluminum Cog with Precision Spacers & Adjustable Tensioner
Best for: Complete DIY Upgrade Set.
This complete single-speed conversion bundle features a CNC 7075 aluminum cog with a reinforced 9mm thick base for durability. It includes a dual-spring guided pulley chain tensioner that reduces chain slap and vibration for quiet performance.
The 16T cog is crafted from 66g lightweight 7075 aluminum with a 9mm thick base to protect Shimano HG freehub splines. The included 140g CNC dual-pulley chain tensioner uses dual springs to minimize chain slap and vibration, ensuring quiet operation. This bundle offers an all-black, scratch-resistant anodized finish for long-term durability.
Product Details
| Brand | PeakRider |
|---|---|
| Style | Pro Single Speed Upgrade Kit |
Pros
- CNC 7075 aluminum cog
- Reinforced 9mm thick base
- Dual-pulley chain tensioner
- Reduces chain slap and vibration
Cons
- Only one cog size (16T) specified in title
A robust DIY upgrade for Shimano HG hubs, ideal for commuters and urban riders. Ensure the 16T gear ratio suits your riding style and terrain.
5. 15T/16T/18T Single Speed Cogs Conversion Kit for Multi-Speed Bike to Dirt Jump/BMX, Aluminum Single Speed Cassette with Spacer and Locking Ring
Best for: Dirt Jump/BMX Aluminum Cog.
This single speed conversion kit features a 9mm thick aluminum cog with extra-tall teeth for reliable chain retention, even with chain tensioners. Its one-piece 7075 high-quality aluminum alloy construction ensures durability for demanding use.
The 7075 aluminum alloy cog boasts a 9mm thick base to evenly distribute stress on the freehub, preventing damage under heavy loads. Extra-tall teeth and a unique narrow-wide profile provide reliable chain retention and longer wear life compared to other aluminum cogs. This kit includes a single speed cassette, spacers, and a locking ring.
Product Details
| Brand | CooMeng |
|---|---|
| Color | Black |
| Included Components | 12mm Spacer, 2mm Spacer, 7mm Spacer, Lock Ring, Single Speed Cassette |
| Item Package Dimensions L x W x H | 4.02 x 3.27 x 1.65 inches |
| Item Weight | 0.1 kg |
| Manufacturer | COOMENG |
| Material | Aluminum, Nylon, Steel |
Additional Product Information
| Model | SCBLACK |
|---|---|
| Package Weight | 0.08 kg |
| Size | Single Speed 18T |
| Warranty Description | 12 Mounth |
Pros
- 9mm thick base for stress distribution
- Extra-tall teeth for chain retention
- One-piece 7075 aluminum alloy
- Durable construction for heavy loads
Cons
- Package weight is 0.08 kg
Designed for dirt jump and BMX riders needing robust chain retention and freehub protection. Verify compatibility with your specific bike setup and desired gear ratio.
6. Bike Chain Tensioner Single Speed Chain Adjuster Converter for MTB, Road Bike
Best for: Lightweight Aluminum Chain Adjuster.
This aluminum alloy chain tensioner is lightweight, adding no extra burden to your bicycle. It effectively converts multi-speed bikes into single speed, ensuring perfect chain tension for reduced pedaling effort.
Made from aluminum alloy, this chain tensioner weighs only 0.01 kg, making it exceptionally light. It is designed to fit various gear sizes and prevent chain slippage from the crank. The tensioner ensures perfect chain tension, particularly for 11T/13T derailleurs, allowing for smoother pedaling with less effort.
Product Details
| Brand | BNYTXV |
|---|---|
| Case Material Type | Aluminum |
| Color | As Picture Show |
| Included Components | not null |
| Item Weight | 0.01 kg |
| Manufacturer | ZSooner |
| Part Number | 15919275047518 |
Additional Product Information
| Material | Aluminum |
|---|---|
| Model Number | 15919275047518 |
Pros
- Lightweight aluminum alloy construction
- Converts multi-speed to single speed
- Ensures perfect chain tension
- Prevents chain skidding
Cons
- Size is approximately 90x50mm
A practical and lightweight solution for single speed conversions on MTB, road, or fixie bikes. Best for riders seeking to optimize chain tension without adding weight.
7. Origin8 Single Speed Conversion Kit
Best for: Cassette Hub Conversion Kit.
This single speed conversion kit efficiently converts a cassette hub to single speed, including eight anodized 6061 alloy spacers in various sizes to precisely adjust the chain line for optimal performance.
The kit is designed to convert a standard cassette hub into a single speed setup. It includes eight conical spacers made from anodized 6061 alloy, allowing for fine-tuning of the chain line. This ensures proper cog alignment and smooth operation. The components are designed to fit Shimano-style cassette bodies.
Product Details
| Brand | Origin8 |
|---|---|
| Case Material Type | Aluminum |
| Color | Black |
| Included Components | Included as described |
| Item Weight | 10.08 ounces |
| Manufacturer | Origin8 |
| Part Number | 26283 |
Additional Product Information
| Material | Multiple |
|---|---|
| Model Number | Single Speed Conversion Kit |
| Warranty Description | Original Manufacturer Warranty |
| Additional Information | Important Information Proposition 65 Warning for California Consumers WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
Pros
- Converts cassette hubs to single speed
- Includes 8 anodized alloy spacers
- Adjustable chain line
- Fits Shimano style cassette bodies
Cons
- Item weight is 10.08 ounces
A straightforward kit for converting existing cassette hubs to single speed. Suitable for riders who need precise chain line adjustment with included spacers.
8. Wheels Mfg Solo-XD Singlespeed Conversion Kit Black
Best for: XD/XDR Freehub Durability.
This 18T single speed conversion kit for XD/XDR freehub bodies is crafted from durable 7075 aluminum. Its innovative narrow-wide tooth pattern technology ensures superior chain retention and smooth power transfer for aggressive riding.
Constructed from lightweight yet extremely durable 7075 aluminum, this kit features an innovative narrow-wide tooth pattern for superior chain retention and smooth power transfer. It is engineered for compatibility with 9-12 speed chains, including SRAM Eagle and T-Type. The 18T cog enhances bike versatility without adding excess weight.
Product Details
| Brand | Wheels Manufacturing |
|---|---|
| Color | Black |
| Included Components | Single-Speed Conversion Kits |
| Item Weight | 7.2 ounces |
| Manufacturer | Wheels Manufacturing |
| Model | SOLO-XD |
| Model Number | WMSOLOXDKIT1 |
Additional Product Information
| Model Year | 2000 |
|---|---|
| Number Of Speeds | 1 |
| Size | 18T |
| Special Feature | Portable |
| Style Name | Single-speed Conversion Kits |
| Warranty Description | Limited Warranty |
| Additional Information | Important Information Proposition 65 Warning for California Consumers WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
Pros
- 7075 aluminum for durability
- Narrow-wide tooth pattern
- Superior chain retention
- Compatible with 9-12 speed chains
Cons
- Designed for XD/XDR freehub bodies only
A high-performance single speed solution for riders with XD/XDR freehub bodies. Ideal for aggressive riding and technical terrains where chain retention is critical.
9. Single Speed Conversion Kit by Reverse Components
Best for: HG Freehub Fine Tuning.
This single speed kit converts any normal HG freehub wheel into a single speed drive, featuring a CrMo cog with a 7mm thick Hyperglide-spline. It includes a range of aluminum spacers for fine-tuning the chain line.
The kit includes a 13T CrMo cog with a 7mm thick Hyperglide-spline and 1.8mm tooth thickness for durability. Seven aluminum spacers, including two 10mm, one 5mm, and four 3mm, allow for precise chain line adjustment. An alloy lockring is also provided to secure the cog.
Product Details
| Brand | reverse |
|---|---|
| Color | Green |
| Item Dimensions LxWxH | 7.87 x 5.67 x 0.75 inches |
| Item Package Dimensions L x W x H | 8.03 x 5.83 x 0.71 inches |
| Item Weight | 1 g |
| Manufacturer | Reverse |
| Material | Multiple |
Additional Product Information
| Model | Reverse Single Speed Kit, 13T, Green |
|---|---|
| Model Year | 2017 |
| Package Weight | 0.08 kg |
| Style | Does Not Apply |
Pros
- Converts HG freehub to single speed
- Durable CrMo cog
- Includes 7 aluminum spacers
- Precise chain line tuning
Cons
- Only one cog size (13T) included
A good option for converting standard HG freehub wheels to single speed. Best for those who need fine chain line adjustment with multiple spacer options.
10. Wheels Manufacturing SOLO-XD 18T Single Speed Conversion Kit for XD Hubs
Best for: XD Hub Lightweight Durability.
This 18T single speed conversion kit for XD hubs is constructed from 7075 aluminum, offering a lightweight yet extremely durable solution. Its innovative narrow-wide alternating tooth pattern ensures superior chain retention and efficiency.
Crafted from 7075 aluminum, the carrier and cogs are both lightweight and durable, ensuring long-lasting reliability. The cog features a narrow-wide alternating tooth pattern designed for superior chain retention, reducing drops and improving efficiency during aggressive riding or commuting. This kit is specifically designed for the SOLO-XD carrier system.
Product Details
| Brand | Wheels Manufacturing |
|---|---|
| Color | Blue |
| Included Components | Single-Speed Conversion Kits |
| Item Dimensions LxWxH | 13.75 x 10.25 x 3.5 inches |
| Item Package Dimensions L x W x H | 13.75 x 10.25 x 3.5 inches |
| Item Weight | 8.32 ounces |
| Manufacturer | Wheels Manufacturing |
Additional Product Information
| Material | Aluminum |
|---|---|
| Model | SOLO-XD |
| Package Weight | 8.32 ounces |
| Style | Single-Speed Conversion Kits |
| Warranty Description | Limited Warranty |
Pros
- 7075 aluminum construction
- Lightweight and durable
- Superior chain retention
- Improves efficiency
Cons
- Designed for XD hubs only
An excellent choice for XD hub users seeking a lightweight and durable single speed conversion. Suitable for aggressive riding and commuting where chain security is paramount.
What Buyers Often Overlook
Freehub and dropout fit determine the correct kit
Freehub and dropout compatibility should be confirmed before comparing tooth counts or materials. The PeakRider, Bibike, Origin8, and Reverse products are described for Shimano-style or HG cassette bodies, although Bibike specifically lists Shimano or SRAM 8- to 11-speed HG bodies and chains from six to 11 speeds. Wheels Manufacturing SOLO-XD products are designed for XD/XDR systems and list compatibility with 9- to 12-speed chains, including SRAM Eagle, SRAM T-Type, and KMC.
A kit for the wrong freehub standard will not be an appropriate direct fit. Dropout design matters separately: DMR Simple Tension Seeker converts a traditional vertical-dropout frame, while the BNYTXV product is a standalone chain adjuster for MTB, road, fixie, and single-speed applications.
If the frame cannot position the rear wheel to tension the chain, select a kit that includes a tensioner or plan for a compatible adjuster.
The Key Product Trade-Off
Cog size, tooth retention, and spacer control shape everyday use
Cog size and chain-line adjustment are the main practical trade-offs after compatibility. The listed products span 13T through 22T choices, with PeakRider offering an 18T version, Reverse a 13T cog, and PeakRider’s bundle describing 16T as a balance for commuting or urban riding. A larger cog generally favors easier gearing, while a smaller cog favors higher gearing, but the supplied data does not establish a universal best size for every rider.
Spacers help position the cog: Origin8 includes eight sizes, Reverse includes seven spacers, and several PeakRider, Bibike, and CooMeng kits include multiple spacer sizes. Tooth profiles also matter for retention.
PeakRider describes positive-negative teeth, while CooMeng and Wheels Manufacturing SOLO-XD describe narrow-wide patterns; these features are intended to reduce chain drops or improve engagement. A tensioner may still be necessary when the frame lacks adjustable wheel placement.
Best Single Speed Conversion Kit: Buyer's Guide
Fit, Dimensions, and Compatibility
Compare the listed dimensions with the intended counter, cabinet, appliance, storage, or installation space. Confirm model compatibility and connection requirements where they are supplied. A useful feature cannot compensate for a product that does not physically fit or work with the buyer’s existing setup.
Capacity, Output, and Operating Format
Match listed capacity, volume, output, and operating mode to the actual household or work routine. Larger figures can support heavier use, while a smaller format may be easier to place and maintain. Treat daily output, immediate storage, and container capacity as separate specifications when the listing distinguishes them.
Materials, Construction, and Care
Use the listed materials and care instructions to judge cleaning effort, storage conditions, and compatibility with the intended use. Dishwasher, freezer, food-contact, or weather-related claims are included only when supplied for that product. Check whether routine care fits the way the product will be used.
Included Components and Setup Needs
Review the included components before planning installation or first use. Hoses, adapters, lids, paddles, bowls, brushes, controls, and manuals vary by listing. Confirm power, water, assembly, or accessory requirements from the supplied product information rather than assuming that separately pictured parts are included.
Which Should You Choose?
Choose an HG-compatible spacer-and-cog kit if your wheel uses a Shimano-style cassette body; Origin8 and Reverse emphasize multiple spacers for chain-line adjustment, while Bibike covers HG bodies and several chain widths. Choose PeakRider’s 16T bundle when you want a listed urban-oriented gear size plus an included dual-pulley tensioner. Consider CooMeng or PeakRider when a reinforced 9mm base and aluminum cog are priorities.
Pick Wheels Manufacturing SOLO-XD when the hub is XD/XDR, and use its stated 9- to 12-speed chain compatibility as a fit check. Choose DMR for a traditional vertical-dropout frame, or BNYTXV when you need a separate lightweight aluminum chain adjuster.
Confirm freehub, chain, dropout, and cog requirements before ordering.
Quick Buying Checklist
- Confirm the complete dimensions against the available space.
- Verify model, accessory, connection, and appliance compatibility.
- Match capacity or output to the expected amount of use.
- Compare materials and care instructions with the maintenance routine.
- Check the included components before planning setup or first use.
- Confirm listed power, water, storage, or installation requirements where applicable.
Frequently Asked Questions
What is a single speed conversion kit?
A single speed conversion kit allows you to modify a geared bicycle into a single-speed bike. It typically includes a cog, spacers, and a chain tensioner to ensure proper chain alignment and tension on a frame not originally designed for single speed.
Do I need a chain tensioner?
Yes, a chain tensioner is crucial for most single speed conversions. It takes up the slack in the chain, preventing it from falling off. Some kits include one, while others require a separate purchase or rely on horizontal dropouts.
What hub type do these kits fit?
Kits are designed for specific hub types. Common ones include Shimano HG freehubs, which are widely compatible. Some kits are specifically made for XD drivers, which are often found on higher-end mountain bikes.
Can I use any cog size?
While many kits offer various cog sizes (e.g., 15T to 22T), the ideal size depends on your riding style and terrain. Smaller cogs offer higher top speed, while larger cogs provide more climbing torque. Check compatibility with your chainring.
What tools are needed for installation?
Installation typically requires basic bike tools. You’ll likely need a chain tool to break and rejoin the chain, a cassette lockring tool for removing the old cassette, and Allen keys for the chain tensioner and possibly hub adjustments.
Final Words
Choosing the right single speed conversion kit depends on your existing bike’s hub type and your desired riding experience. For general use on Shimano HG hubs, a comprehensive kit with a tensioner is often best. If you have an XD driver or prefer a minimalist setup, specific kits cater to those needs.
