Best Single Speed Cassette Hub Upgrades for Bikes
Choosing the right single speed conversion kit can transform a multi‑speed hub into a clean, minimal drivetrain without sacrificing chain alignment or reliability. This guide highlights five popular options, detailing compatibility, components, and how each kit can help you achieve a precise pedaling ratio. Whether you ride road or mountain bikes, these kits are designed to simplify gearing while keeping your hub functional and safe.
Summary of chosen products:
- CyclingDeal Conversion Kit 16 Teeth for Shimano/SRAM hubs
- CyclingDeal Conversion Kit 18 Teeth for Shimano/SRAM hubs
- Bibike Single Speed Conversion Kit 13T/14T/15T/16T/17T/18T/20T/22T
- Yundxi Bike Single Speed Conversion Kit 12T–22T
- Origin8 Ultim8 Single Speed Cassette Cog, 20T
Note: The kits covered here convert multi‑speed hubs to single speed wheels by adding spacers, a lockring, and a single speed cog. They are compatible with Shimano and SRAM 7–11 speed hub bodies. They do not transform a hub into a fixed gear (fixie); the hub remains a freewheel hub in most cases. Always check the specific chain widths and spacer options to ensure a perfect chain line.
CyclingDeal 16T Single Speed Conversion Kit
The CyclingDeal kit converts a multi‑speed hub to a single speed wheel while remaining compatible with Shimano or SRAM 7–11 speed cassette bodies for both mountain and road bikes. It notes that the hub will not become a fixie and remains a freewheel hub. The kit supports chain widths from 1/2″ x 3/32″ to 1/2″ x 11/128″ (7–11 speed chains), allowing you to reuse your existing chain. A selection of sprocket teeth ensures the right pedaling ratio, and the package includes spacers, a lockring, and a sprocket to optimize chain alignment. Watch the listing video for further setup details.
Key features:
- Compatibility with Shimano/SRAM 7–11 speed hub bodies
- Includes spacers, lockring, and sprocket
- Supports various chain widths for precise chain line
- Not a fixie conversion; hub remains a freewheel hub
CyclingDeal 18T Single-Speed Conversion Kit
Similar to the 16T version, this kit converts a multi‑speed hub to a single speed wheel and is compatible with Shimano or SRAM 7–11 speed cassette hub bodies on both mountain and road bikes. It emphasizes that the hub remains a freewheel hub, not a fixie. It supports a broad range of chain widths (1/2″ x 3/32″ to 1/2″ x 11/128″), so you can reuse your current chain. The included spacers, lockring, and sprocket enable a proper chain line, with guidance available in the listing video.
Key features:
- Compatible with Shimano/SRAM 7–11 speed hubs
- Complete with spacers, lockring, and sprocket
- Adaptive to various chain widths for optimal chain line
- Clear note: hub remains a freewheel hub, not a fixie
Bibike 13T–22T Single Speed Kit
The Bibike kit is designed for Shimano or SRAM 8–11 speed HG cassette bodies on mountain and road bikes. It accommodates chain widths from 1/2″ x 3/32″ to 1/2″ x 11/128″ (6–11 speed chains). The package includes a 17T cassette, spacers of 10mm and 5mm (two 5mm), a 3.7mm spacer, a 2mm spacer, and a lock ring. This range provides flexibility to tailor gearing and chain line to your riding style. The kit’s 17T default offers a mid‑range gear option, with the spacers enabling precise alignment.
Key features:
- Shimano/SRAM 8–11 speed compatibility
- Wide 13T–22T range for cassette options
- Includes all spacers and lock ring for easy setup
Bibike 16T–22T Single Speed Kit
This Bibike variant is tailored for Shimano or SRAM 8–11 speed HG cassette bodies on mountain and road bikes. It supports chain widths from 1/2″ x 3/32″ to 1/2″ x 11/128″ (6–11 speed chains). The kit includes a 17T cassette, 10mm spacer, two 5mm spacers, a 3.7mm spacer, a 2mm spacer, and a lock ring. With multiple spacers, riders can achieve a perfect chain line and suitable gearing for urban commuting or light trail use.
Key features:
- Broad 8–11 speed compatibility
- Comprehensive spacer set for precise alignment
- 17T common gearing choice with adjustable spacers
Yundxi 12T–22T Single Speed Kit
This Yundxi kit uses aluminum alloy and stainless steel for durability, delivering a lightweight yet sturdy solution for converting a multi‑speed hub to single speed. It emphasizes anti‑corrosion properties and a design that improves the contact area to protect the hub body. Compatible with Shimano or SRAM 7–10 speed cassette hub bodies, it supports 1/2″ x 1/8″ and 1/2″ x 3/32″ single speed chains. Note that it does not convert a hub into a fixie and the hub remains a freewheel type.
Key features:
- Lightweight aluminum/stainless build
- Compatibility with 7–10 speed hubs
- Includes spacers and lock ring for chain line control
Yundxi 12T–22T Second Kit
This additional Yundxi variant mirrors the built‑in durability and versatility of the earlier model, with a similar range of 12T–22T and compatible with 7–10 speed cassette setups. It uses the same construction approach to reduce weight while maintaining strength and corrosion resistance. The kit includes spacers and a lock ring to help achieve an accurate chain line and reliable single speed operation. It is suitable for riders who want a broad gearing range and straightforward installation.
Key features:
- Similar compatibility as other Yundxi kits
- Wide gearing range for flexible riding styles
- Spacers and lock ring included for precise setup
Origin8 Ultim8 20T Single Speed Cog
The Origin8 Ultim8 cog is designed to serve as a single speed cog for conversion projects or fixed gear builds. It is intended for use with compatible Shimano cassette bodies or 6‑bolt disc mounts, enabling a straightforward upgrade path for riders who want a fixed gear or simpler gearing on specific hubs. The dual‑purpose cog supports a compact 20T size and is positioned as a practical option for those seeking a robust, mid‑range gear in mixed riding conditions.
Key features:
- Dual use as a single speed cog or 6‑bolt disc fixed cog
- Fits Shimano cassette bodies or 6‑bolt mounts
- Suitable for converting or upgrading hubs
Buying Guide: Key Purchase Considerations
When selecting a single speed conversion kit, consider hub compatibility, chain width, and chain line accuracy. The most critical factor is ensuring the kit matches your hub body’s compatibility (Shimano or SRAM 7–11 speed or 8–11 speed HG), and that the spacer assortment provides the correct chain line for your frame. If you use a road versus mountain bike, verify clearance with frame and derailleur hanger compatibility.
Gearing range matters for riding style. A 16T or 18T cog offers a balanced setup for city commuting and light hills, while a larger range like 13T–22T in Bibike kits gives flexibility for steeper grades or faster cruising. Reuse of your current chain is often possible, but confirm chain width compatibility to avoid excessive wear. The kit’s included spacers and lock ring are essential for achieving a straight chain line and preventing chain slip. Finally, assess installation resources — some listings include helpful videos for setup guidance.
Versatility versus specialization is another consideration. Kits with broader sprocket options provide greater future adjustment, but may require more precise alignment work. If you expect frequent chain changes or want a clean aesthetic, a stable 16T–18T option paired with well‑documented spacers tends to deliver reliable results. Always follow the manufacturer’s installation instructions and consult the video resources for a smooth setup process.