Answer: A 13 speed conversion kit is designed to convert a multi-speed drivetrain to a single-speed setup, typically for BMX, dirt jump, or nostalgia builds. This guide highlights five strong options and explains who each kit suits best. The top picks are ideal for riders seeking straightforward upgrades without changing their frame or hub. The buyer’s choice depends on compatibility with existing cassettes, spacers, and chain width.
Summary of selected products (quick reference):
| Product | Brand | Best For | Key Feature |
|---|---|---|---|
| Bibike 13T–22T Cassette & Spacers (16T/15T starting options) | Bibike Store | Mountain and road bikes needing 6–11 speed chain compatibility | Complete spacer set with multiple spacers and lock ring |
| Single Speed Conversion Kit for Shimano HG Freehub (15T/16T/18T) | PeakRider Store | 7–12 speed HG freehub users seeking strong, durable cog | 7075 aluminum cog, tall teeth, precise spacers, no Microspline/SRAM XD |
| Bibike 13T–22T Cassette & Spacers (alternate 15T option available) | Bibike Store | Similar setup for different kit availability | Includes 15T/17T/22T options with spacer set |
| Bibike 13T–22T Cassette & Spacers (17T/18T/20T options) | Bibike Store | Road and mountain bikes needing flexible cog choices | Wide range of cog options with spacers and lock ring |
| 15T/16T/18T Single Speed Cogs (Aluminum, 7075) | CooMeng Store | Flat-bed single-speed builds or dirt jumping setups | One-piece 7075 aluminum cog with narrow-wide teeth |
Bibike Single Speed Conversion Kit 13T–22T (16T/15T)
The Bibike kit fits Shimano or SRAM 8–11 speed HG cassette bodies and supports chain widths from 1/2″ ×3/32″ to 1/2″ ×11/128″. It includes a 16T cassette, spacers, and a lock ring. Best for riders upgrading older multi-speed wheels to a simplified single-speed setup. Suitable for mountain and road bikes seeking a lightweight conversion with a complete spacer set. Caution: ensure chain width compatibility with your current chain to avoid mis-shifts.
Single Speed Conversion Kit for Shimano HG Freehub (15T/16T/18T)
Designed for standard 7–12 speed Shimano HG freehub bodies, this kit includes a CNC 7075 aluminum cog plus spacer set (5mm, 7mm, 12mm). It emphasizes true one-piece strength and a tall tooth profile for better chain retention and reduced chain drops. Best for riders wanting a stable, robust single-speed conversion that resists hard riding. Not compatible with Microspline or SRAM XD drivers. Limitation: intended for Shimano HG hubs only.
Bibike 13T–22T Cassette & Spacers (15T)*Alternate
This Bibike kit mirrors the core 13–22T concept with a 15T option plus essential spacers and a lock ring. It is ideal for riders who want a straightforward upgrade path on 8–11 speed HG cassettes. Best for mixed-terrain riders who value compatibility with widely used chain widths. Limitation: available cog options vary by seller stock; verify your preferred cog size before purchase.
Bibike 17T/18T/20T Cassette & Spacers
Featuring 17T, 18T, and 20T options with a complete spacer set, this Bibike kit is best for riders seeking a broader range of gearing within a simple single-speed conversion. It supports Shimano/SRAM 8–11 speed HG bodies and standard chain widths. Choose this if you want flexibility across terrain. Caution: confirm hub compatibility and spacing to align with your frame clearance and chain line.
15T/16T/18T Cogs Conversion Kit (7075 Aluminum)
This kit uses one-piece 7075 aluminum cogs with a narrow-wide tooth profile and a robust 9mm base. It provides strong chain retention and even stress distribution across the freehub. Best for riders who want a lightweight, durable cog with reliable engagement for dirt jumps or BMX-style riding. Limitation: some frames may require careful alignment to maintain chain tension and clearance.
Buying Guide
What should you consider when selecting a 13 speed conversion kit?
- Hub compatibility: Verify HG freehub compatibility (7–12 speed) and avoid Microspline or XD if not supported.
- Cog size range: Choose a kit with cog sizes that fit your riding style and terrain needs (13T–22T options cover multiple setups).
- Chain width compatibility: Ensure the kit supports your chain width (commonly 1/2″ ×3/32″ to 1/2″ ×11/128″).
- Base and spacer design: A thicker base (around 9mm) distributes pedaling stress and protects the freehub from damage.
- One-piece vs split designs: One-piece aluminum cogs generally offer greater strength and durability, but verify installation compatibility with your wheel.
- Weight considerations: Aluminum cogs tend to be lightweight but confirm total system weight if performance is critical.
- Installation complexity: Review included spacers and lock rings to ensure a straightforward setup without additional parts.
FAQ
- Q: Will a 13T cog fit my 11-speed drivetrain?
A: It depends on your hub type and chain width; ensure the kit is designed for 7–12 speed HG bodies and compatible with your chain width. - Q: Can I use these kits on a road bike?
A: Yes, if the hub is HG-compatible and the frame clearance allows the new sprockets and spacers. - Q: Do these kits require special tools?
A: Most kits require basic bike tools; a lock ring tool is commonly needed for securing the cog. - Q: Are these compatible with SRAM XD or Microspline hubs?
A: Some are not; check the product notes to confirm hub compatibility before buying. - Q: What is the best option for dirt jumps?
A: Kits with larger cog options (17T–22T) and a solid 9mm base tend to offer better chain retention under jumping loads. - Q: Do these include all necessary spacers?
A: Yes, most listed kits include multiple spacers and a lock ring for complete installation.