Vortex 337ZK-39 Aluminum Rear Sprocket 520 Pitch 39 Tooth Black

The Vortex 337ZK-39 is a lightweight aluminum rear sprocket designed for high-performance motorcycle applications. This premium racing sprocket features 39 teeth and is engineered for 520 pitch chains, offering an excellent balance of acceleration and top speed for sport bikes and performance motorcycles.

Key Features:

• 39-tooth count for 520 pitch chain applications
• Lightweight aluminum construction reduces rotating mass for improved performance
• Black anodized finish (ZK designation) provides corrosion resistance and distinctive appearance
• 100% CNC manufactured in the USA to precise tolerances
• Specially formulated aluminum alloy per Vortex specifications
• Unique tooth design increases sprocket longevity
• Vortex patented sprocket design for optimal chain engagement

Vortex Racing sprockets are the racer's choice, delivering professional-grade quality and performance. The lightweight construction aids in putting more power to the pavement while reducing unsprung weight for improved handling and acceleration.