Vortex 528AZR-39 Aluminum Rear Sprocket 39 Tooth 528 Pitch

The Vortex 528AZR-39 is a high-performance aluminum rear sprocket designed for motorcycle racing and street applications. This sprocket features 39 teeth and is manufactured using Vortex's premium 7075-T6 aluminum alloy construction, offering an excellent balance of strength and lightweight performance.

Key Features:

• 39-tooth configuration for optimized gearing
• 528 pitch compatible with standard 528 chain
• 7075-T6 aluminum construction for maximum strength-to-weight ratio
• Hard anodized finish with zinc phosphate coating for corrosion resistance
• CNC machined from a single piece of aluminum for precision fit
• Self-cleaning mud grooves to prevent debris buildup
• Lighter than steel sprockets while maintaining durability

Vortex sprockets are engineered to exact tolerances and undergo rigorous quality control testing. The AZR series combines lightweight aluminum construction with enhanced durability, making it ideal for both track and street use. Each sprocket is designed to work seamlessly with 528 pitch chains for reliable power transfer.