Vortex 512ZK-42 Black 42-Tooth 520-Pitch Aluminum Rear Sprocket

The Vortex 512ZK-42 is a 42-tooth, 520-pitch black anodized aluminum rear sprocket engineered for performance motorcycle applications. Machined from a specially formulated aluminum alloy to Vortex's exact specifications, this sprocket delivers an ideal balance of reduced rotating mass and long-term durability.

Key Features:

• Lightweight aluminum construction reduces rotating mass for improved throttle response and acceleration
• 100% CNC manufactured in the USA to precise tolerances for concentricity and consistent fit
• Black anodized finish resists corrosion and provides a clean, aggressive appearance
• Vortex patented tooth design unlike any other sprocket, engineered to increase sprocket longevity
• 520 chain pitch compatibility for a wide range of sport and performance motorcycles
• 42 teeth for stock or performance-tuned gearing configurations

Vortex Racing sprockets are a trusted choice among track riders and street enthusiasts alike. The 512ZK-42 is a direct-fit rear sprocket that pairs perfectly with any 520-pitch chain for a complete drive system upgrade or straightforward OEM replacement.