Vortex 825ZK-42 Rear Sprocket Pitch Aluminum Sprockets - 530 42-Tooth Black

The Vortex 825ZK-42 is a premium racing rear sprocket designed specifically for Marvic and Galespeed aftermarket wheels. This high-performance aluminum sprocket features 530 pitch with 42 teeth and is finished in black with machined accents for a distinctive two-tone appearance.

Key Features:

• CNC machined from 7075-T6 aluminum for exceptional strength-to-weight ratio
• Patented Vortex sprocket design with unique tooth profile for extended longevity
• Black hardcoat anodized finish with machined accents for corrosion resistance and style
• Lightweight construction reduces rotating mass for improved acceleration
• 530 pitch, 42-tooth configuration for precise gearing control
• Specifically engineered for Marvic and Galespeed wheel fitments

Vortex Racing aluminum sprockets are the choice of professional racers worldwide, offering significant weight savings over steel counterparts while maintaining the durability needed for high-performance applications. The patented tooth design and precision CNC machining ensure optimal chain engagement and extended service life when properly maintained. Perfect for sport bikes, track bikes, and racing applications where weight reduction and performance are priorities.