Vortex 200ZB-55 CAT5 520 Aluminum Rear Sprocket 55-Tooth

The Vortex 200ZB-55 is a 55-tooth, 520-pitch CAT5 aluminum rear sprocket engineered for high-performance street and racing motorcycles. Machined from aerospace-grade 7075-T6 aluminum, this sprocket delivers significant rotational weight savings over steel while maintaining the strength and precision required for demanding riding conditions.

Vortex's iconic CAT5 design features a two-tone machined finish achieved by applying the anodized coating before the sprocket is cut — a process that gives it the distinctive look performance riders recognize. At 55 teeth, this sprocket is a popular choice for stunt riding and aggressive street setups where increased rear wheel torque and quicker acceleration are the priority.

Key Features:

• 520 Pitch — must be paired with a 520-pitch front sprocket and chain
• 55-Tooth rear sprocket for increased torque and acceleration
• 7075-T6 Aerospace Aluminum construction for maximum strength-to-weight ratio
• CAT5 Design with signature two-tone anodized and machined finish
• Silver finish (Vortex aluminum sprockets 55T and above are available in silver)
• ZB bolt pattern fitment for compatible motorcycle models

For best results, clean the chain and sprocket every 300–600 miles on street bikes. Always ensure the front sprocket, rear sprocket, and chain are all the same pitch when installing or converting your drivetrain.