Vortex 615ZK-51 Aluminum Rear Sprocket 51 Tooth

The Vortex 615ZK-51 is a high-performance aluminum rear sprocket designed for serious riders who demand quality and durability. This 51-tooth sprocket is precision-engineered to deliver optimal performance while reducing rotating mass compared to heavy stock sprockets.

Key Features:

• 51 teeth for precise gearing control
• 100% CNC manufactured in the USA to tight tolerances
• Constructed from specially formulated 7075-T6 aluminum alloy per Vortex specifications
• Patented tooth design increases longevity and wear resistance
• Lightweight construction reduces rotating mass for improved acceleration
• Lightening holes strategically placed to minimize weight without sacrificing strength
• Compatible with 520-pitch chain systems

Vortex Racing sprockets are the choice of professional race teams worldwide, tested on the track to ensure they meet the demands of motocross, supercross, and road racing applications. Each sprocket is manufactured to exacting standards using premium materials for reliable performance mile after mile.