To convert a multi-speed bike to a reliable single-speed setup, choose a conversion kit that fits your freehub, matches your chain width, and provides solid spacers and a locking ring. The top picks here are suited for riders seeking durable, affordable single-speed upgrades for mountain, road, BMX, and dirt-jump bikes. Best for: casual riders testing simplicity; BMX or dirt-jump riders needing strong, lightweight cogs; and road bikers upgrading for simplicity and maintenance ease. The following table compares the five best options covered in this article.
| Product | Brand | Key Feature | Best For |
|---|---|---|---|
| Bibike 13T–22T Conversion Kit | Bibike Store | Includes 16T, spacers, and lock ring | Road and mountain bikes needing a full kit |
| 15T/16T/18T Conversion Kit | CooMeng Store | 9mm base, premium aluminum cog | Heavy-use multi-speed bikes to single-speed |
| Bibike 13T–22T Conversion Kit | Bibike Store | Includes 17T, spacers, and lock ring | Versatile compatibility for HG cassettes |
| Bibike 13T–22T Conversion Kit | Bibike Store | Same platform, 17T option included | Lightweight single-speed builds |
| 15T/16T/18T Conversion Kit | CooMeng Store | One-piece 7075 aluminum alloy | Durable, long-lasting single-speed cogs |
Bibike Single Speed Conversion Kit 13T–22T
Best for: riders who want a complete kit with multiple spacers for precise fit on mountain and road bikes. The kit is compatible with Shimano or Sram 8–11 speed HG cassette bodies and supports chain widths from 1/2″ × 3/32″ to 1/2″ × 11/128″. This makes it versatile for a wide range of 6–11 speed chains. Included are a 16T cassette, 10mm spacer, two 5mm spacers, a 3.7mm spacer, a 2mm spacer, and a locking ring. Consider this option if you want a ready-to-install conversion with essential spacers in one package.
Best for: road and mountain bikes where space and compatibility with standard HG bodies matter. Caution: check your freehub width and chain tensioning method to ensure the spacer stack aligns properly. This kit emphasizes compatibility and completeness over ultra-lightweight design.
15T/16T/18T Single Speed Cog Kit for Multi-Speed Bikes
Best for: riders seeking a premium aluminum single-speed cog with a narrow-wide tooth profile for reliable chain retention, especially when using chain tensioners. The kit uses a one-piece 7075 aluminum alloy flywheel, weighing about 66g, which reduces weight while maintaining strength. It features a wider 9mm base to evenly distribute stress across the freehub, reducing potential damage under heavy loads. This option is well-suited for dirt jump and BMX builds where durability and retention are priorities.
Best for: heavy-use scenarios and riders who prize a strong, single-piece design. Caution: aluminum cogs can wear faster than steel on aggressive riding; verify compatibility with your chain and tensioning method.
Bibike 13T–22T Conversion Kit (Second Listing)
Best for: users who want a familiar Bibike kit with a different 17T option included. It supports Shimano or Sram 8–11 speed HG cassettes and a wide chain width range. Included are a 17T cassette, spacers, and a locking ring to secure the setup. Choose this if you prefer Bibike’s compatibility stack and a longer gear range within a single kit.
Best for: consistent, middle-ground builds where a 17T option facilitates a balanced gear ratio. Caution: verify the exact spacers included for your wheel’s freehub height; mismatches can affect chain alignment.
Bibike 13T–22T Conversion Kit (Another Listing)
Best for: riders who appreciate the same Bibike platform but with a 17T cassette emphasis and complete spacer set. The kit is compatible with 8–11 speed HG bodies and a broad chain width range. It includes a 17T cassette plus spacers and a lock ring, offering straightforward upgradeability for compatible bikes.
Best for: builds prioritizing proven Bibike compatibility and a straightforward install. Caution: confirm your chain width and freehub compatibility to avoid misfit with your wheel.
15T/16T/18T Aluminum Cog Kit (Second Listing)
Best for: riders who want a durable, lighter cog design with an aluminum alloy design. The one-piece 7075 aluminum alloy flywheel reduces weight to about 66g, and the 9mm base helps prevent stress concentrating on the freehub under heavy loads. It emphasizes lasting performance and reliable chain retention for BMX and dirt-jump setups.
Best for: performance-minded builds where weight and strength matter. Caution: as with any aluminum cog, consider mileage and wear; steel cogs can last longer under extreme use.
Buying Guide: How to Choose a Single Speed Conversion Kit
- Freehub compatibility: Ensure the kit fits Shimano or Sram HG 8–11 speed cassettes. Some older hubs or non-standard bodies may require a different interface.
- Chain width and gear count: Verify support for 1/2″ chains with 3/32″ to 11/128″ spacing. A wider chain often pairs with higher-torque applications.
- Cog material: Aluminum cogs offer light weight and corrosion resistance; steel cogs may last longer under heavy use. Consider your riding style before choosing material.
- Base and spacer design: A wider base (e.g., 9mm) distributes stress more evenly, reducing freehub wear. Check whether the kit includes all spacers and a locking ring.
- Gear range vs. simplicity: A 13T–22T range provides flexibility, but higher teeth counts affect chain alignment and tensioning. Match the range to your typical terrain.
- Weight considerations: Lighter cogs improve acceleration, useful for BMX and dirt-jump builds. However, heavier steel options may survive harsher conditions.
- Installation complexity: Some kits are one-piece cogs; others require multiple spacers. Choose a kit that aligns with your DIY skills and tool availability.
FAQ: Quick Answers for Buyers
- What is a single-speed conversion kit? It replaces a multi-speed cog cluster with a single cog and spacers to create a fixed gear ratio or simplified drivetrain.
- Will these kits fit my bike? Most kits target Shimano/Sram HG 8–11 speed bodies; check your freehub type and chain width before purchasing.
- Are aluminum cogs durable? Aluminum cogs are lighter and resist corrosion but may wear faster than steel under aggressive riding.
- Do I need additional parts? Many kits include spacers and a lock ring, but confirm you have the correct chain length and tensioner (if applicable) for your setup.
- Can I revert to a multi-speed setup later? Yes, provided you still have the original rear derailleur and freehub compatibility; you may need to reinstall a cassette and derailleur setup.
- What’s the best option for BMX or dirt jump? Kits with premium aluminum cogs and wide base bases are recommended for retention and durability in high-torque environments.