Vortex 611ZB-51 Blue 51-Tooth 520-Pitch Aluminum Rear Sprocket

The Vortex 611ZB-51 is a 51-tooth, 520-pitch rear sprocket machined from lightweight 7075 T6 billet aluminum and finished in a vibrant blue anodize. Engineered for motorcycle road racing, motocross, supercross, and street performance, this sprocket delivers race-proven durability and precise power transfer to the rear wheel.

Key Features:

• 51 Teeth / 520 Pitch: Designed for 520-pitch chain drive systems, offering compatibility with a wide range of sport and race motorcycles
• 7075 T6 Billet Aluminum: High-strength, lightweight alloy construction reduces unsprung rotational mass for improved throttle response and handling
• Blue Anodized Finish: Cat 5 anodized blue finish provides corrosion resistance while adding a distinctive look to the drivetrain
• Vortex Patented Saber Tooth Groove Design: Proprietary tooth geometry increases sprocket longevity and promotes smooth, consistent chain engagement
• 100% CNC Machined: Manufactured to tight tolerances for precise fitment and long service life
• PTFE Black Hardcoat Option Available: The Vortex lineup also offers a black hardcoat version that bonds to the aluminum for added durability and reduced friction

Vortex Racing is a U.S.-based manufacturer with a long history of supplying top-quality drivetrain components to professional and amateur racers worldwide across Motocross, Supercross, Road Racing, Flat Track, and Minibike disciplines. Each sprocket is tested with direct feedback from top professional race teams.