Vortex 817ZK-41 CAT5 Black Aluminum Rear Sprocket 41 Tooth 520 Pitch

The Vortex 817ZK-41 is a 41-tooth, 520-pitch CAT5 aluminum rear sprocket finished in a black anodized coating. Engineered for street and road racing applications, this sprocket delivers an ideal balance of reduced rotating mass and long-term durability.

Key Features:

• Lightweight CAT5 aluminum construction — reduces rotating mass for improved throttle response and acceleration
• 100% CNC manufactured in the USA — machined to precise tolerances for consistent, reliable performance
• Specially formulated alloy per Vortex specifications — engineered for optimal strength-to-weight ratio
• Black anodized finish — resists corrosion and provides a clean, aggressive appearance
• Vortex patented unique tooth design — promotes even chain wear and extends sprocket longevity
• 41 teeth / 520 pitch — allows for fine-tuned gear ratio adjustments versus stock gearing

Vortex rear sprockets are a proven choice for riders looking to optimize their motorcycle's gearing. A higher tooth count rear sprocket increases low-end torque and acceleration, making the 817ZK-41 well-suited for riders who prioritize corner-exit performance and quicker acceleration over top-end speed. Always replace the front sprocket, rear sprocket, and chain as a matched set for optimal wear characteristics.