Vortex 642CZR-51 520 Aluminum Rear Sprocket 51 Tooth

The Vortex 642CZR-51 is a high-performance 520 pitch aluminum rear sprocket designed for serious riders who demand precision and reliability. Manufactured from 7075 T6 aluminum with CNC machining, this 51-tooth sprocket delivers exceptional strength-to-weight ratio for improved acceleration and handling.

Key Features:

• Lightweight aluminum construction reduces rotating mass for improved acceleration and handling
• 100% CNC machined with saber tooth grooves
• Clear anodized finish with gunk clearing grooves between each tooth
• Made to the tightest tolerances with direct feedback from top professional race teams
• Manufactured to such tight tolerances that lifespan rivals some steel sprockets
• 520 pitch for lighter chain and sprocket conversion
• 51 teeth for customizable gearing ratios

Vortex sprockets are made from aerospace-grade aluminum, providing optimal power transfer and reduced rotational mass. Ideal for racing applications, track days, and performance street riding where weight savings and precision matter most.