Vortex 523ZK-45 Black 45-Tooth 520-Pitch Aluminum Rear Sprocket

The Vortex 523ZK-45 is a 45-tooth, 520-pitch black anodized aluminum rear sprocket built for motorcycle riders who demand race-grade drivetrain performance. Part of Vortex Racing's trusted ZK series, this sprocket delivers a premium combination of light weight, precision manufacturing, and long service life.

Key Features:

• 520 Pitch — Compatible with standard 520-pitch drive chains
• 45 Teeth — Tuned gearing for enhanced low-end torque and acceleration
• Lightweight Aluminum Construction — Reduces rotating mass to improve throttle response and put more power to the pavement
• 100% CNC Manufactured in the USA — Machined to precise tolerances for consistent fitment and true running
• Specially Formulated Alloy — Material developed to Vortex Racing's own specifications for optimal strength-to-weight ratio
• Black Anodized Finish — Anodized coating resists corrosion and provides an aggressive, race-inspired appearance
• Patented Vortex Tooth Design — Unique tooth geometry extends sprocket longevity and promotes smooth chain engagement

The Vortex 523ZK-45 rear sprocket is an ideal upgrade for riders looking to fine-tune gear ratios, reduce drivetrain weight, or replace a worn OEM sprocket with a higher-quality component. Always replace the chain and front sprocket together for maximum performance and component life.