Vortex 528ZK-51 CAT5 Aluminum Rear Sprocket 520 Pitch 51 Tooth Black

The Vortex 528ZK-51 is a high-performance CAT5 aluminum rear sprocket designed for serious motorcycle enthusiasts and racers. This lightweight sprocket features 51 teeth and 520 pitch sizing, making it an ideal upgrade for reducing rotating mass and improving acceleration and handling on sport bikes.

Key Features:

• 100% CNC manufactured in the USA to precise tolerances
• CAT5 black PTFE hardcoat finish bonds to aluminum for enhanced durability and reduced friction
• Specially formulated aluminum alloy per Vortex specifications ensures strength and longevity
• Unique patented tooth design increases sprocket life and maintains quieter operation
• Lightening holes reduce weight without compromising structural integrity
• Significantly lighter than OEM steel sprockets for improved power delivery

Vortex Racing has been manufacturing premium motorcycle racing components for over 15 years, with products tested and proven by top professional race teams worldwide. Each sprocket is precision-engineered to ensure concentricity and reliability, whether for track use or spirited street riding. The CAT5 black hardcoat finish not only provides an aggressive, performance-oriented appearance but also creates a harder, more durable surface that resists wear better than standard anodized finishes.