Vortex 839ZR-42 CAT5 Aluminum 42-Tooth Rear Sprocket

The Vortex 839ZR-42 is a high-performance 42-tooth rear sprocket designed for serious motorcycle racing and performance applications. This sprocket features Vortex's signature CAT5 lightweight aluminum construction with color anodizing and contrasting silver machine cuts for a distinctive appearance.

Key Features:

• Lightweight CAT5 aluminum racing sprocket for reduced rotating mass
• 100% CNC manufactured in the USA for precision fitment
• Specially formulated alloy per Vortex specifications
• Color anodized finish with bright silver highlights
• Saber tooth grooves with unique tooth design increases sprocket longevity
• Vortex patented sprocket design for optimized chain hold and release
• 42-tooth configuration for custom gearing applications

Vortex Racing has been manufacturing top-quality motorcycle racing components since 1995, with products tested by professional race teams worldwide. The ZR series utilizes the same high-performance Vortex design with color anodizing that creates a bright flash of color (red, blue, gold, or black depending on availability) with bright silver machine-cut highlights.