Surly Track Cog 3/32'' X 18t Silver

Surly Track Cog 3/32 18T Silver for Single Speed BMX Track Hub

The Surly Track Cog is built for serious track riders who demand durability and precise engagement. Molded from 415 hardened chromoly steel, this 18-tooth cog withstands the brutal torque of sprint starts and rapid gear changes without deforming or losing teeth at high load.

Specifications align with track performance standards: 3/32" chain width for reliable compatibility with fixed-gear and track chains, and a 1.375" x 24 tpi right-hand thread profile that mirrors BMX freewheel threading. While it can thread onto some BMX freewheel hubs, track cogs are optimized for track hub systems to preserve consistent chain retention and accurate cog alignment during fast laps.

Key benefits and use cases

• Explosive power transfer for short-track accelerations and smooth, predictable climbs.
• Robust chromoly construction resists wear from heavy pedaling and environmental exposure.
• Compact 18-tooth gearing ideal for sprint-focused riders and tight cornering on velodrome-inspired courses.
• Simple, reliable installation with standard track hub compatibility for single-speed setups.

Installation and care

• Clean threads before installation; apply a light anti-seize or lubricant and avoid over-tightening.
• Ensure proper chain tension and verify cog seating against the hub surface to prevent skip.
• Inspect for wear after high-torque sessions and clean to extend lifespan.