Vortex 154ZR-51 CAT5 Red 51-Tooth 520 Aluminum Rear Sprocket

The Vortex 154ZR-51 is a lightweight CAT5 aluminum rear sprocket featuring a bold red anodized finish with contrasting silver machine-cut highlights. Designed for performance street and road racing applications, this 51-tooth, 520-pitch sprocket is 100% CNC manufactured in the U.S.A. from a specially formulated aluminum alloy engineered to Vortex's exacting standards.

Key Features:

• 51 teeth — 520 pitch rear sprocket
• Lightweight CAT5 aluminum construction — reduces rotating mass for improved performance
• 100% CNC manufactured in the U.S.A. — precision machined to tight tolerances
• Specially formulated aluminum alloy — per Vortex specifications for optimum strength-to-weight ratio
• Saber tooth groove design — Vortex patented tooth profile increases sprocket longevity
• Red anodized finish — color anodizing applied to body panels with bright silver machine-cut contrasts on sweeps, mud grooves, and teeth
• Available in multiple tooth counts — to fine-tune gearing for acceleration or top-speed applications

Vortex Racing is a U.S.-based manufacturer trusted by professional road racing, motocross, and supercross teams worldwide. The CAT5 line delivers race-proven performance and distinctive styling, making it a popular upgrade over heavy OEM steel sprockets.