Description
If you’re running a countershaft sprocket that can’t handle sustained power delivery without accelerating wear, you’re leaving performance and reliability on the table. The SUPERSPROX 12-Tooth Countershaft Sprocket is engineered with the same durability standards that factory racing teams demand, combining a hardened steel construction with a lightweight design that reduces rotational mass without sacrificing strength. Whether you’re chasing lap times on pavement or pushing through technical terrain, this sprocket delivers consistent engagement and extended service life.
- Material: SCM-435 carbon-free steel
- Tooth count: 12-tooth
- Surface hardness: Ultra-hard layer (.5mm)
- Friction reduction: Chain drag minimized
- Weight reduction: Radial lightening holes
- Tooth design: Grooved profile
- Application: Off-road and street
- Installation: Bolt-on fitment
- MPN: CST-1901-12-4
- Factory racing specification: Yes









