Vortex 523ZR-45 Silver 45-Tooth 530-Pitch Aluminum Rear Sprocket

The Vortex 523ZR-45 is a 45-tooth, 530-pitch aluminum rear sprocket designed for high-performance street and track motorcycles. Precision-engineered in the USA, this sprocket is a trusted choice among racers and performance enthusiasts who demand lightweight drivetrain components without sacrificing durability.

Vortex Racing has been manufacturing top-quality motorcycle racing components since 1995, with each part built to the tightest tolerances using the best materials available. The 523ZR-45 features a silver (ZR) anodized finish and is CNC-machined from a specially formulated aluminum alloy to deliver an ideal balance of strength and weight reduction.

Key Features:

• 45 teeth, 530-pitch — direct-replacement or performance gearing upgrade
• CNC-machined aluminum construction — reduces rotating mass for improved throttle response and power delivery
• Specially formulated aluminum alloy per Vortex specifications for optimal strength-to-weight ratio
• Vortex patented unique tooth design for increased sprocket longevity and precise chain engagement
• Silver anodized finish for corrosion resistance and clean aesthetics
• 100% manufactured in the USA
• Tested on the track with feedback from top professional race teams worldwide

The 523ZR-45 is a bolt-on upgrade that reduces rotating mass compared to a stock steel sprocket, putting more power to the pavement. It is compatible with standard 530-pitch drive chains and is suited for road racing, track days, and high-performance street use.