Answering the common question, this article highlights the best single speed conversion kits to adapt multi-speed hubs for a clean, single-speed setup. These kits appeal to riders seeking simpler maintenance, fewer gears, or a reliable chain retention system. The top picks vary by bike type and hub compatibility, making them ideal for mountain and road riders, BMX enthusiasts, and riders upgrading standard freehubs. Below you’ll find concise comparisons, who each kit is best for, and practical buying tips to help you choose confidently.
| Product | Best For | Key Benefit |
|---|---|---|
| Bibike 13T–22T Single Speed Cassette & Spacers (Multiple Teeth) | General mountain/road bikes | Wide tooth range for tuning pedal cadence |
| CooMeng 15T/16T/18T Single Speed Cog Kit | Durable aluminum cog with strong base | Heavy-load stability and precise teeth |
| CyclingDeal 18-Tooth Conversion Kit | Multi-speed hubs with standard chain width | Versatile spacers for proper chain line |
| PeakRider 7–12 Speed HG Freehub Conversion Kit | Shimano HG freehubs | Solid one-piece cog with corrosion resistance |
| Bibike 13T–22T (Alternative Bibike Variant) | Versatile KB setups on various hub bodies | Consistent spacers and simple install |
The following sections present five carefully chosen products. Each entry includes a clickable link, a compact image block, a concise feature summary, who it suits best, and a realistic caveat. Use these details to compare compatibility and space for your bike’s freehub and chain line.
Bibike 13T–22T Single Speed Cassette & Spacers
Best for riders seeking a wide gearing range on Shimano or Sram 8–11 speed HG bodies. The kit covers 13T through 22T and includes spacers to fit common chain widths from 3/32″ to 11/128″. It ships with a lock ring and all spacers needed for a straightforward install. Ideal for mountain or road bikes where you want a simple, robust conversion without changing the freehub.
- Best for: versatile gearing options on standard HG hubs.
- Why selected: broad tooth range supports various pedaling cadences and terrains.
- Limitations: may require precise spacing to maintain a perfect chain line on some frames.
CooMeng 15T/16T/18T Single Speed Cog Kit
This kit is designed for multi-speed bikes transitioning to a dirt-jump/BMX single-speed setup. It emphasizes a wide, strong base and tall teeth for reliable chain retention, even with chain tensioners. The one-piece 7075 aluminum cog keeps weight down while offering durability for heavy use. Best for riders who want a durable, lightweight conversion with dependable chain engagement.
- Best for: BMX and dirt-jump riders needing secure chain retention.
- Why selected: tall teeth and a wide base increase stability under jumps and hard pedaling.
- Limitations: designed for specific hub bodies; verify compatibility with your freehub.
CyclingDeal Conversion Kit Fixie Bike Single Speed
Best for riders converting a Shimano or Sram multi-speed hub to a single speed with a focus on chain-line precision. The kit includes spacers and a sprocket to help achieve a true single-speed setup while preserving hub integrity. Note that it converts a multi-speed hub to single speed but does not convert the hub to a fixed gear.
- Best for: achieving a clean chain line without modifying the hub body.
- Why selected: spacer set enables careful alignment with a chosen chain width.
- Limitations: will not convert the hub into a fixed gear; still a freewheel setup.
PeakRider 7–12 Speed HG Freehub Conversion Kit
Best for Shimano HG freehubs seeking a robust, corrosion-resistant, one-piece aluminum cog. The kit supports standard 7–12 speed HG freehubs and includes a precision spacer set to establish a precise chain line. It distributes pedaling forces through a 9mm base, helping protect the freehub during heavy riding. Choose this for a long-lasting, secure single-speed conversion.
- Best for: Shimano HG freehubs needing strong, stable engagement.
- Why selected: one-piece 7075 aluminum cog reduces failure points and improves durability.
- Limitations: not compatible with Microspline or SRAM XD drivers.
Bibike 13T–22T Alternative Variant
Best for users who want a familiar Bibike setup with reliable spacers and a broad tooth range. This variant mirrors the 13T–22T range and includes spacer sets adequate for common chain widths. It’s suitable for riders upgrading standard multi-speed hubs to a simple single-speed configuration on both mountain and road bikes.
- Best for: Bibike fans seeking a consistent kit with familiar spacer options.
- Why selected: reliable spacing options and straightforward installation.
- Limitations: ensure exact tooth count matches your intended cadence and gearing.
Buying Guide: Key Considerations for a Single Speed Conversion Kit
Compatibility first. Check your hub type (Shimano or Sram), the number of speeds supported by your current freehub, and the chain width you use (commonly 3/32″ or 11/128″). A wider base and tall teeth can improve chain retention in demanding riding conditions. If you ride aggressively or jump, a one-piece aluminum cog (7075) can offer greater strength and longevity than split designs.
Gear range and chain line matter. A broader tooth range provides more tuning flexibility, but you must maintain a correct chain line to avoid rubbing or derailment. Many kits include spacers to optimize alignment; verify the total spacer thickness when planning to install multiple spacers.
Weight versus durability. Aluminum cogs balance light weight with durability. For BMX or dirt-jump use, prioritize a cog with a wide base and robust tooth geometry to resist wear and maintain engagement under tension.
Installation notes. Some kits do not convert to fixed gears and are intended for standard single-speed setups on freehub-based hubs. Always confirm whether the kit requires a specific lockring or additional parts. If you use a tensioner, ensure compatibility with the kit’s spacer arrangement.
Maintenance and safety. Regularly inspect the cog and spacers for wear or deformation. A secure lockring and consistent lubrication of the chain help prevent dangerous chain drops and ensure smooth pedaling.
FAQ
- Q: Do these kits work on all hubs? A: They target standard Shimano/Sram freehub bodies; compatibility depends on hub model and the specific kit’s spacer set.
- Q: Can I convert any bike to single speed with these kits? A: Most kits suit multi-speed hubs to single-speed setups; verify chain width, tooth count, and hub compatibility for your frame and drivetrain.
- Q: Will a single-speed cog affect wheel alignment? A: Yes, achieving a precise chain line is essential; spacers are used to adjust alignment for optimal clearance and engagement.
- Q: Are these kits suitable for racing bikes? A: They are generally suitable for road and mountain bikes when the hub supports a single-speed conversion and the gearing matches riding needs.
- Q: Do any kits include all necessary spacers? A: Most entries include spacer sets and lock rings; always confirm the exact components listed in the product description.
- Q: Is a one-piece cog stronger than a split cog? A: Typically, yes; a one-piece 7075 aluminum cog provides uniform strength and reduces the risk of failures at a split joint.