Surly Track Cog 1/8 Inch 18T Silver – High-Performance BMX Component

Surly Track Cog: Precision-Built for Track Cycling Demands

Designed exclusively for high-performance track riding, Surly’s Track Cog delivers unwavering durability and precision engineered for velodrome enthusiasts and fixed-gear cyclists. Constructed from 415 hardened chromoly steel, this cog withstands extreme wear and tear, ensuring a long-lasting grip on your chain even during intense sprints and grueling training sessions. With threading compatible with standard BMX freewheels (1.375″ x 24 tpi right-hand threads), it seamlessly integrates into single-speed setups—but remember, it’s optimized for track hubs where its true potential shines.

Key Features:
– Material Strength: Built with 415 chromoly steel for unmatched resilience against slippage and deformation.
– Thread Compatibility: Works on BMX freewheel hubs but tailored for track-specific performance and reliability.
– Tooth Configuration: 18 teeth provide a balanced gear ratio ideal for speed training or fixed-gear street setups requiring agility and power.
– Precision Finish: Machined to exacting standards for smooth engagement and minimal chain noise.

While these cogs can technically be used on single-speed or BMX hubs, their design prioritizes the rigid demands of track cycling—where every rotation matters. Unlike BMX freewheels, which often compromise on lateral stiffness due to their multi-tooth design, Surly’s Track Cog ensures razor-sharp responsiveness when paired with a dedicated track hub. This makes them perfect for competitive cyclists seeking edge-to-edge traction during races or those building a fixed-gear bike optimized for urban commuting or velodrome use.

Comparison at a Glance
| Feature | Surly Track Cog | BMX Freewheel |
|———————–|—————————|—————————-|
| Material | 415 hardened chromoly | Softer alloy steel |
| Stiffness | Rigid for precise tracking | Flexible multi-tooth design |
| Ideal Use | Track racing / Fixed-gear | BMX / Single-speed trails |
| Thread Compatibility | Works on BMX hubs* | Standard BMX setup |

Note: While compatible with BMX hubs, performance may vary due to design differences.

Whether you’re chasing podium finishes or mastering your skills on the board track, Surly’s Track Cog combines robust construction with refined engineering to elevate your ride. Its sleek profile and reliable threading make it a go-to choice for riders who demand precision without compromise—perfect for those building a dedicated fixed-gear machine or upgrading their existing setup for track-ready performance.