Vortex 203ZK-42 CAT5 Aluminum Rear Sprocket 520 Pitch 42 Tooth Black

The Vortex 203ZK-42 is a high-performance CAT5 aluminum rear sprocket engineered for riders seeking reduced weight and improved acceleration. This 42-tooth sprocket features 520 pitch chain compatibility and Vortex's distinctive black anodized finish with contrasting silver machined cuts.

Key Features:

• Lightweight CAT5 aluminum racing sprocket construction
• 100% CNC manufactured in the USA to precision tolerances
• Specially formulated aerospace-grade aluminum alloy per Vortex specifications
• Unique saber tooth groove design increases sprocket longevity
• Black anodized finish for corrosion resistance and distinctive appearance
• Vortex patented sprocket design with mud grooves and sweeps
• 42 teeth for optimal gearing performance
• 520 pitch chain compatibility

Vortex CAT5 sprockets deliver significant weight savings compared to OEM steel sprockets, resulting in reduced rotating mass for improved acceleration and handling response. Each sprocket is precision CNC-machined to exact specifications and features Vortex's proprietary tooth profile that extends service life. The black anodized coating provides excellent corrosion protection while maintaining the sleek appearance racers demand.