Description
A worn or undersized countershaft sprocket costs you power transfer efficiency and accelerates chain wear across your entire drivetrain. The SUPERSPROX CST-520-15-2 delivers factory-level durability with a hardened steel construction and lightweight design that minimizes rotational mass—ideal for both street and off-road riding where reliability matters. When you’re pushing hard on the track or trail, you need a sprocket engineered to handle the abuse without compromise.
Technical Specifications:
- Material: SCM-435 carbon-free steel
- Tooth count: 15T
- Chain size: 520
- Surface hardness: Ultra-hard layer (.5mm)
- Friction reduction: Optimized surface coating
- Weight reduction: Radial lightening holes
- Tooth design: Grooved for dirt removal
- Off-road rated: Yes
- Street rated: Yes
- Factory team specification: OEM racing supplier
- Installation: Bolt-on
- MPN: CST-520-15-2









