Vortex 642AZOV4-43 VTX Aluminum Rear Sprocket 43T 520 Pitch OV4 Aftermarket Wheel Fitment

The Vortex 642AZOV4-43 is a lightweight aluminum rear sprocket engineered for motorcycles equipped with OV4-pattern aftermarket wheels, including popular brands such as OZ Racing, Marchesini, and BST. Featuring a 43-tooth count and 520 pitch, this sprocket is a precision-crafted upgrade for performance street and track riders seeking to reduce rotating mass.

Key Features:

• 100% CNC manufactured in the USA to exacting tolerances for consistent fitment and performance
• Constructed from a specially formulated aluminum alloy per Vortex specifications for optimal strength-to-weight ratio
• Silver anodized finish resists corrosion and provides a bright, clean appearance
• Vortex patented tooth design increases sprocket longevity and improves chain engagement
• 43 teeth, 520 pitch — compatible with standard 520-pitch chains
• Designed specifically for the OV4 aftermarket wheel bolt pattern used by OZ Racing, Marchesini, BST, and similar aftermarket wheels
• Reduces overall drivetrain weight compared to steel sprockets, improving throttle response and rear-wheel power delivery

Vortex Racing has been manufacturing top-quality motorcycle racing components in the USA for over 15 years, with components trusted by professional race teams worldwide. The 642AZOV4-43 is an ideal choice for riders running premium aftermarket wheels who want a performance-matched sprocket with race-proven reliability.