SuperProx 13 teeth Gearbox output pinionRef : SUP00366A / PB30913

13-Tooth Output Sprocket by SuperProx

The 13-tooth output sprocket is designed for motocross and off-road conditions. Made from treated steel "SCM45" with a self-cleaning tooth design for enhanced performance in muddy conditions. The perforated sprocket offers reduced weight for easy replacement and smoother rotation.

Design and Materials

• High-strength treated steel SCM45 ensuring good mechanical durability to limit wear during intensive use
• Perforated sprocket reducing mass for easier rotation and handling during installation
• Self-cleaning teeth reducing mud accumulation to maintain more consistent contact between chain and sprocket

Usage and Performance

• Pitch 520 and 13 teeth corresponding to the technical specifications indicated for suitable replacement of 520-equipped transmissions
• Standard version allowing direct mounting on standard output shafts without modification
• Cross type designed to withstand the demands of off-road riding and provide reliable performance on tracks

Advantages

• OEM Reference CST-1590:13.1
• Renowned manufacturer since 1959, specialising in high-performance sprockets and crowns

Compatible Motorcycle Examples

• YAMAHA YZ 250 F 250 (2026)
• FANTIC XXF 250 250 (2026)
• GAS-GAS EC 300 F 300 (2015)

Complete list of compatible motorcycles available in the dedicated section below