13-Tooth Output Sprocket by SuperProx
Output sprocket made from cemented steel designed for 428 pitch transmission, suitable for both off-road and road use. Reinforced design for increased longevity and tooth durability under wear conditions. Grooves and lightening holes engineered for off-road applications without compromising strength.
Design and Materials
- SCM-435 cemented steel providing high wear resistance to extend the sprocket's lifespan
- Reinforced core structure to maintain tooth strength even under intensive use
- Optimised grooves and lightening holes for off-road use to limit mud accumulation and facilitate maintenance
Fit and Cut
- 428 pitch for precise compatibility with 428 chain systems
- 13 teeth defining the gear ratio and final engine behaviour
- Standard version allowing direct replacement on compatible transmissions
Benefits
- OEM Reference CST-277:13.2
- Manufactured by SUPERSPROX, expertise in sprocket production since 1959
Examples of Compatible Motorcycles
- HONDA CRF 125 F BIG WHEELS 16/19 125 (2026)
- FB MONDIAL SMX 125 MOTARD CBS E5+ 125 (2025)
- APRILIA TUONO 125 4T ABS E5+ 125 (2025)
Complete list of compatible motorcycles available in the dedicated section below