Vortex 452AZB-39 Aluminum Rear Sprocket 39 Tooth 520 Pitch

The Vortex 452AZB-39 is a high-performance aluminum rear sprocket designed for 520 pitch chain applications. This 39-tooth sprocket features Vortex's CAT5 construction, combining lightweight 7075-T6 aerospace-grade aluminum with exceptional strength and durability.

Key Features:

• 39-tooth configuration for optimized gearing performance
• 520 pitch chain compatibility
• 7075-T6 aluminum alloy construction for superior strength-to-weight ratio
• Blue anodized finish for corrosion resistance and distinctive appearance
• CNC-machined from solid aluminum billet for precision fitment
• Self-cleaning mud grooves to prevent debris buildup
• Laser-etched tooth count markings for easy identification

Vortex aluminum sprockets are engineered to provide significant weight savings over steel sprockets while maintaining excellent wear characteristics. The hard-anodized surface treatment extends sprocket life and protects against the elements. Each sprocket is manufactured to strict tolerances ensuring proper chain alignment and optimal power transfer.