Fixed Gear Bike Cog & Lock Ring 13T–18T | Carbon Steel Track
Fixed Gear Bike Cog & Lock Ring 13T–18T | Carbon Steel Track
Fixed Gear Bike Cog & Lock Ring Set — 13T to 18T
Upgrade your fixie or track bike with this precision-machined bicycle cog and lock ring set, available in 13T, 14T, 15T, 16T, 17T, and 18T options. Crafted from Carbon Steel #45 with CNC machining and a silver-plated finish, these cogs deliver reliable engagement and long-lasting durability for urban commuting, velodrome racing, or everyday fixed-gear riding.
Key Features
- Material: Carbon Steel #45 — pressed and CNC-machined for tight tolerances
- Finish: Heat-treated and silver-plated for corrosion resistance
- Cog Thread: Right-hand, clockwise — B1.37"–24 (approx. 34.8 mm)
- Lock Ring Thread: Left-hand, counter-clockwise — B1.29"–24 (approx. 32 mm)
- Full Height: Approx. 8 mm | Tooth Thickness: Approx. 3.1 mm
- Net Weight: Approx. 50–90 grams depending on tooth count
- Compatibility: Standard fixed-gear / track hubs with dual-threaded cog mount side
- Package Includes: 1 × Wheel Cog + 1 × Fixing Lock Ring
Tooth Options
Select your preferred tooth count at checkout: 13T, 14T, 15T, 16T, 17T, or 18T. A lower tooth count delivers a higher gear ratio for speed; a higher count provides easier spinning — ideal for hilly routes or beginners transitioning to fixed-gear riding.
Compatibility Note
Important: Before ordering, verify that your hub is designed for a fixed-gear cog mount. Your hub must have two separate threaded sections on the drive side — one for the cog (right-hand thread) and one for the lock ring (left-hand thread). Standard freehub bodies and cassette hubs are not compatible.
Specifications at a Glance
| Material | Carbon Steel #45 |
| Production | Pressed, CNC-machined |
| Cog Thread Size | B1.37"–24 (~34.8 mm), Right-hand |
| Lock Ring Thread Size | B1.29"–24 (~32 mm), Left-hand |
| Tooth Options | 13T / 14T / 15T / 16T / 17T / 18T |
| Full Height | ~8 mm |
| Tooth Thickness | ~3.1 mm |
| Weight | ~50–90 g |
| Country of Origin | Made in China |
For guidance on bicycle component standards and safe cycling practices, visit the U.S. Consumer Product Safety Commission — Bicycle Safety.
Frequently Asked Questions
Q: What tooth count should I choose for my fixed gear bike cog?
A: The right tooth count depends on your riding style and terrain. A 13T or 14T cog gives a higher gear ratio suited for flat roads and speed. A 16T, 17T, or 18T cog offers a lower gear ratio that is easier to spin, making it a great choice for hilly routes or riders new to fixed-gear cycling. Pair the cog tooth count with your chainring size to calculate your gear ratio.
Q: Will this fixed gear cog fit my bike hub?
A: This cog is designed for standard fixed-gear / track hubs with a dual-threaded drive side. The cog uses a B1.37"–24 right-hand thread and the included lock ring uses a B1.29"–24 left-hand thread. It is not compatible with freehub or cassette-style hubs. Check your hub's threading specifications before ordering.
Q: What is included in the package?
A: Each order includes one wheel cog (in your chosen tooth count: 13T, 14T, 15T, 16T, 17T, or 18T) and one corresponding lock ring. No additional tools are included.
Q: Is this cog suitable for track racing as well as urban commuting?
A: Yes. The CNC-machined Carbon Steel #45 construction meets the demands of both velodrome track riding and everyday urban fixed-gear commuting. The silver-plated, heat-treated finish helps resist corrosion from outdoor exposure.