Vortex 840AZB-40 Aluminum Rear Sprocket 40 Tooth Blue

The Vortex 840AZB-40 is a precision-engineered aluminum rear sprocket featuring 40 teeth with blue anodizing for enhanced durability and distinctive style. This sprocket is part of Vortex's specialized 840 series, designed for specific aftermarket and performance wheel applications including BST and other lightweight racing wheels.

Key Features:

• 40-tooth aluminum construction for reduced rotational mass and improved acceleration
• Blue anodized finish provides corrosion resistance and eye-catching appearance
• Machined from aerospace-grade aluminum to precise tolerances
• Vortex patented tooth design for extended sprocket life and optimal chain engagement
• Designed for 520 pitch chain applications
• Mounting pattern: 5-bolt with 100mm PCD (Pitch Circle Diameter) and 76mm center bore

Manufactured in the USA by Vortex Racing, a trusted name in motorcycle drivetrain components since 1995. Each sprocket undergoes rigorous quality control to ensure concentricity and proper fitment. The lightweight aluminum construction reduces unsprung weight while maintaining the strength needed for high-performance street and track applications.