Many riders assume any cog will fit their rear hub, but buying the wrong spline type is a frustrating mechanical mismatch. You need a specific setup to keep your chainline straight and your drivetrain quiet.
Selecting the best fixed gear conversion kit requires matching your hub’s interface to the cog’s tooth count. Small details dictate your riding experience. Read on to see which components fit your frame.
Key Takeaways
- Verify your hub uses a standard HG freehub body before purchasing a spacer kit.
- Choose a steel cog for maximum longevity if you plan to skid often.
- Match the spacer width precisely to ensure your chain stays perfectly vertical.
- Confirm your dropouts can handle the tension required for a single-speed setup.
- Stick to 13t or 14t options if you want a gear ratio that favors rapid acceleration.
| Best All-Rounder |  |
Getuse Fixed Gear Conversion Kit | Simplifies hub conversion | Compatible with common hubs | Durable metallic finish | View on Amazon | Read Review |
| Powerful Motor Upgrade |  |
Electric Rear Wheel Hub Motor | Massive power output | Includes LCD display | Fixed speed cruise control | View on Amazon | Read Review |
| Precision Engineering Choice |  |
Wheels Manufacturing Solo-Speed Cog | High manufacturing standards | Reliable spline fit | Strong steel construction | View on Amazon | Read Review |
| Lightweight Racing Option |  |
Origin8 Torq Lite Cassette Cog | Very low weight | Minimalist design | High-quality finish | View on Amazon | Read Review |
| Reliable Daily Driver |  |
Origin8 Single Speed Cog | Sturdy build quality | Consistent performance | Easy to install | View on Amazon | Read Review |
| Budget Friendly Conversion |  |
Gravity Economy Spacer Kit | Complete spacer solution | Budget-conscious pick | Simple to configure | View on Amazon | Read Review |
| Specialized Drivetrain Component |  |
Single Speed Reverse Cog | Unique gear application | Solid metal construction | Precise fit | View on Amazon | Read Review |
More Details on Our Top Picks
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Getuse Fixed Gear Conversion Kit
If you want to transform a standard geared wheel into a dedicated track machine, this kit is your starting point. It simplifies the transition by providing the necessary hardware to lock your drivetrain into a single speed setup.
You will appreciate the clean silver finish that looks at home on any frame. While it handles 7-10 speed hubs effectively, be prepared to spend extra time ensuring your chain line alignment is spot on before hitting the road.
- Brand:Getuse
- Component Type:Conversion Kit
- Hub Compatibility:7-10 Speed Hubs
- Additional Feature:Single cassette cog included
- Additional Feature:Track bike compatible
- Additional Feature:Fixed gear conversion hardware
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Electric Rear Wheel Hub Motor
This kit is for the rider who wants to stop pedaling uphill and start cruising with 2000W of force. It acts like a shot of adrenaline for your bike, replacing your rear wheel with a high-torque electric powerhouse.
The inclusion of an intelligent PAS sensor means the power delivery feels intuitive rather than jerky. Keep in mind that this adds significant weight, so ensure your frame can handle the added mass of an electric motor.
- Brand:Unbranded
- Component Type:Hub Motor
- Hub Compatibility:20 inch wheels
- Power Rating:2000W
- Additional Feature:48V system voltage
- Additional Feature:Intelligent pedal assist
- Additional Feature:Rear wheel integration
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Wheels Manufacturing Solo-Speed Cog
Wheels Manufacturing produces components that fit like a tailored suit. This cog is designed for riders who value exact tolerances and high-quality materials when building out a singlespeed drivetrain.
It pairs perfectly with specialized kits, ensuring your chain stays put during aggressive pedaling. The 23t size is ideal for those who prefer a slightly easier gear ratio for climbing or technical urban riding.
- Brand:Wheels Manufacturing
- Component Type:Cog
- Tooth Count:23t
- Hub Compatibility:Solo-Spline and Solo-XD
- Additional Feature:Black finish
- Additional Feature:High-strength metal
- Additional Feature:Optimized tooth profile
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Origin8 Torq Lite Cassette Cog
When every gram counts, the Torq Lite series provides a stripped-back solution for your drivetrain. This 13t cog is built for speed and efficiency, making it a favorite for track enthusiasts who favor a taller gear.
You will find it installs quickly onto standard freehubs, though you will need a spacer kit to get the chain line perfect. It is a minimalist component that removes the clutter of multi-gear systems for a cleaner aesthetic.
- Brand:Origin8
- Component Type:Cog
- Tooth Count:13t
- Additional Feature:Torq Lite design
- Additional Feature:Standard cassette mounting
- Additional Feature:Efficient power transfer
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Origin8 Single Speed Cog
Origin8 strikes a balance between price and performance with this straightforward singlespeed cog. It is a dependable workhorse for commuters who need their bike to work every single day without fail.
The 13t size is standard for those looking to maintain a decent cruising speed on flat terrain. Because it lacks the fancy weight-saving cuts of racing gear, it offers a sturdy feel that resists premature wear.
- Brand:Origin8
- Component Type:Cog
- Tooth Count:13t
- Additional Feature:Reliable steel composition
- Additional Feature:Standard tooth sizing
- Additional Feature:Compatible with most chains
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Gravity Economy Spacer Kit
Building a singlespeed bike does not have to be expensive, and this spacer kit is proof. It contains everything you need to position your cog correctly on a standard mountain or road freehub.
The 14t cog provides a versatile gear ratio that works well for general city commuting. It is a humble setup, but it functions exactly as intended to keep your chain tension consistent.
- Brand:Gravity
- Component Type:Spacer Kit
- Tooth Count:14t
- Hub Compatibility:Mountain or Road
- Additional Feature:Single speed conversion
- Additional Feature:Freehub compatible
- Additional Feature:Includes necessary spacers
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Single Speed Reverse Cog
If your project requires a specific reverse cog setup, this unit handles the task with minimal fuss. It is a niche component designed for frames or hubs that require unique gear orientations.
The build is solid enough to withstand the demands of daily riding without warping or slipping. Ensure you double-check your hub thread patterns, as this is designed for specific reverse-compatible systems only.
- Brand:Unbranded
- Component Type:Cog
- Additional Feature:Reverse thread compatibility
- Additional Feature:Single speed optimized
- Additional Feature:Durable finish
