Vortex 225CZK-39 CAT5 Aluminum Rear Sprocket 39 Tooth 520 Pitch

The Vortex 225CZK-39 is a high-performance CAT5 aluminum rear sprocket designed for motorcycles using 520 pitch chain. This lightweight racing sprocket features 39 teeth and is precision CNC-machined from specially formulated aluminum alloy to exacting specifications for superior concentricity and performance.

Key Features:

• 39-tooth configuration for 520 pitch chain applications
• 100% CNC-manufactured in the USA from aerospace-grade aluminum alloy
• Natural aluminum finish with zinc coating for corrosion resistance
• Unique tooth design increases sprocket longevity and chain engagement
• Lightweight construction reduces rotating mass for improved acceleration and handling
• Precision-machined for perfect concentricity and smooth operation
• Suitable for sport bikes, racing applications, and performance street riding

Vortex sprockets are engineered to Vortex's exacting specifications and feature a patented tooth design that provides superior performance compared to OEM steel sprockets. The lightweight aluminum construction significantly reduces unsprung and rotating weight, allowing for quicker acceleration and more responsive handling characteristics.