Vortex 523ZK-43 Steel Rear Sprocket Pitch Sprockets - 520 43-Tooth Black

The Vortex 523ZK-43 is a 520-pitch, 43-tooth steel rear sprocket finished in electro-plated satin black for corrosion resistance. Built to Vortex Racing's exacting standards, this sprocket delivers reliable power transfer and long service life for street and performance riding applications.

Key Features:

• 520 Chain Pitch — compatible with standard 520-series drive chains
• 43 Teeth — stock-equivalent tooth count for balanced acceleration and top-speed performance
• Carbon Steel Construction — manufactured from carbon steel alloy per Vortex specifications for strength and durability
• Electro-Plated Satin Black Finish — resists corrosion and provides a clean, stealthy appearance
• Unique Tooth Profile — Vortex's patented tooth geometry increases sprocket longevity and reduces chain wear
• Hardened Teeth — engineered to maintain strength over high mileage
• Weight-Optimized Design — cupped construction between the tooth ring and body reduces overall mass

The Vortex 523ZK-43 is an ideal direct replacement rear sprocket for riders seeking OEM-equivalent gearing with enhanced durability. Vortex Racing sprockets are trusted by street riders and racers alike for their precision manufacturing and consistent performance.