Velobike developed a medium-high end track cog made from hardened chromoly steel. It realizes a great performance at an affordable price.
Specifications:
- 250 Keirin certified (12t~16t)
- Hardened 4130 Cr-Mo steel
- Precision CNC machined
- Good durability
- 12-20 tooth
- 1/8” chain width
- Standard 1.37"x24" threads
- Sprocket offset: 6mm (flange to tooth center)