Vortex 526AZB-45 CAT5 Rear Sprocket 520-Pitch 45-Tooth Blue Aluminum

The Vortex 526AZB-45 is a CAT5 series lightweight aluminum rear sprocket featuring a 520 pitch and 45 teeth in a striking blue anodized finish. Engineered as a high-performance upgrade over stock steel sprockets, it delivers meaningful weight savings where it matters most—on rotating drivetrain components—helping improve throttle response and acceleration.

Manufactured entirely in the USA using a specially formulated aluminum alloy developed to Vortex's own specifications, every sprocket is 100% CNC machined to exacting tolerances for perfect concentricity. This precision manufacturing process not only frees up horsepower but also extends the service life of both the sprocket and drive chain.

Key Features:

• CAT5 lightweight aluminum construction — significantly reduces rotating mass compared to steel sprockets
• 520-pitch, 45-tooth rear sprocket configuration
• Blue anodized finish with contrasting silver machine-cut highlights on sweeps, mud grooves, and teeth
• Saber tooth groove design — unique tooth profile engineered to increase sprocket longevity and reduce chain wear
• 100% CNC manufactured in the USA using Vortex's specially formulated aluminum alloy
• Vortex patented sprocket design — available in multiple colors with contrasting silver accents
• Mud grooves help keep the drivetrain clear of debris
• Available in single-tooth increments for precise gearing customization

The CAT5's color anodizing is selectively applied, excluding the sweeps, mud grooves, and teeth—leaving those areas with a bright silver contrast that gives the sprocket its signature two-tone appearance. Whether you're tuning gearing for track days or spirited street riding, the Vortex 526AZB-45 delivers race-proven quality and performance.