Vortex 251ZB-40 Cat5 Rear Aluminum Sprocket Blue 40t

The Vortex 251ZB-40 Cat5 Rear Sprocket is a lightweight, high-performance rear sprocket designed for competitive and sport motorcycle applications. Machined from 6061 billet aluminum, this sprocket delivers a significant weight savings over steel alternatives without sacrificing durability under demanding riding conditions. The striking blue anodized finish provides corrosion resistance while adding a custom, race-inspired look to your drivetrain.

Vortex's Cat5 series sprockets are a favorite among track riders and performance enthusiasts for their precision CNC machining tolerances, consistent tooth geometry, and reliable chain engagement. At 40 teeth, this sprocket is suited for riders looking to optimize acceleration and low-end torque for circuit or aggressive street riding.

Key Features:

• Material: CNC-machined 6061 billet aluminum for maximum strength-to-weight ratio
• Finish: Blue hard anodized for corrosion resistance and lasting color
• Tooth Count: 40T
• Series: Cat5 rear sprocket
• Manufacturer Part Number: 251ZB-40
• Precision CNC machining ensures accurate tooth profile and consistent chain engagement
• Lightweight design reduces unsprung and rotating mass for improved performance
• Designed for direct OEM-style bolt-on installation

Vortex Racing is a trusted name in aftermarket drivetrain components, known for producing race-quality sprockets and chain kits used by professional and amateur riders worldwide. The Cat5 series represents their commitment to delivering track-proven performance at a competitive price point.