Surly Track Cog - 1/8'' X 17t Silver

Surly Track Cog 17T 1/8 in for Track Hubs

New Surly Track Cog engineered for track cycling demands. Crafted from 415 hardened chromoly steel, this cog delivers lasting durability under high-torque accelerations typical of velodrome workouts and sprint efforts. The 17-tooth configuration pairs with 1/8 in chains to provide a snappy, predictable engagement that keeps your drivetrain feeling responsive.

Threading and Compatibility

These cogs use the classic BMX-style 1.375 x 24 tpi right-hand threads, identical to BMX freewheels, enabling secure mounting on track hubs. While the threads will fit single-speed rear hubs and some BMX freewheel hubs, track performance is optimized when used on dedicated track hubs only.

Why it matters

• Clean, durable construction minimizes wear and reduces the risk of slippage during hard pulls.
• 1/8 in tooth profile is designed for track chains, ensuring consistent chain engagement and longer chain life with proper alignment.
• Finish is silver-toned chromoly, balancing strength with a sleek look on any track setup.
• Compact 17T offers a balanced cadence for sprint efforts and controlled tempo riding on the track.

Ideal For

Track riders, fixed-gear enthusiasts, and single-speed converts who rely on precise, predictable gear engagement for racing or fast training sessions.