Track Cog
Best durable upgrade for fixed-gear and track bike enthusiasts.
Elevate your track or fixed-gear bike with the Surly Track Cog, a component built for durability and precision. This essential piece ensures a reliable connection for your drivetrain, offering a simple yet high-performance riding experience. Available in common chain widths of 3/32" and 1/8", you can customize your gearing with tooth counts of 13, 18, or 20. Designed for riders who value a secure and efficient setup, the Surly Track Cog is a testament to straightforward, dependable cycling.
$29.99
Owner Satisfaction
4.8
/ 5
Category Rank
2
/ 2101
#2 in Components
Price vs Category Average
-71%
Below average
Chain Compatibility
33218
/ /" or /"
Who it's for
- Commuters and messengers needing long-lasting drivetrain components
- Fixed-gear riders demanding reliable power transfer and safety
- Cyclists requiring a secure, worry-free fit on standard hubs
Who should skip it
- Weight-conscious racers prioritizing every gram of performance
- Budget-focused riders seeking the most affordable replacement parts
- Style-conscious builders wanting a high-gloss, premium aesthetic
Performance breakdown
Material Durability
Hardened steel construction withstands intense torque from aggressive track riding.
Drivetrain Precision
Tight tolerances ensure a smooth, quiet interface with your chain.
Installation Simplicity
Standard threading makes swapping gear ratios a straightforward, quick task.
Gearing Versatility
Limited tooth count options may restrict fine-tuning for specific track conditions.
Chain Compatibility
Dual width options accommodate both standard road and heavy-duty track chains.
Power Transfer
Minimal flex provides a direct, responsive feel during every pedal stroke.
Key Specs
Chain Compatibility
3/32" or 1/8"
Tooth Count
13, 18, or 20
Type
Track Cog
Features
- Durable construction for lasting performance
- Precise fit for track and fixed-gear bikes
- Multiple chain width options
- Customizable tooth counts
- Engineered for simple, high-performance riding
- Reliable drivetrain connection
What customers say
Users consistently praise the Surly Track Cog for its exceptional durability and robust construction, built from high-quality CroMoly steel. This component earns a reputation as a reliable, set it and forget it part that withstands intense use over many miles. Reviewers frequently note the precise machining ensures a perfect fit, resulting in smooth power transfer and a quiet drivetrain. While the initial cost may be higher than basic options, the consensus is that the cog offers outstanding long-term value due to its minimal maintenance and superior lifespan. It is celebrated as a highly dependable choice for serious fixed-gear riders seeking enduring quality.
Know before you buy
You must match the cog width to your chain. A 1/8" cog is standard for track bikes and heavy-duty fixed-gear setups, while 3/32" is typically used for road-style drivetrains or narrower chains.
Yes, these are designed to fit standard 1.37" x 24tpi threaded track hubs. They are a direct replacement for most fixed-gear rear wheels.
Absolutely. A lower tooth count like 13t will result in a harder gear ratio for higher top speeds, while 18t or 20t options provide easier pedaling and better acceleration, which is ideal for climbing or city riding.
Yes, for safety, you must always use a compatible lockring with a fixed-gear cog. The lockring prevents the cog from unscrewing when you apply back-pressure to slow down.
No, this is a fixed-gear cog designed specifically for track hubs. It must be used with a fixed drivetrain where the pedals rotate whenever the wheel is in motion.
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