Vortex 523ZR-40 Steel Rear Sprocket Pitch Sprockets - 40-Tooth 520 Black

The Vortex 523ZR-40 is a 40-tooth steel rear sprocket designed for 520-pitch chain applications. Built to Vortex's exacting standards, this sprocket is manufactured from carbon steel alloy and finished with an electro-plated satin black coating to resist corrosion and deliver a clean, aggressive look on the bike.

Key Features:

• 40-Tooth Rear Sprocket — stock or performance-tuned gearing option for compatible motorcycles
• 520 Chain Pitch — compatible with standard and 520 conversion chain setups
• Carbon Steel Construction — durable alloy steel per Vortex specifications for long service life
• Electro-Plated Satin Black Finish — corrosion-resistant black coating for lasting appearance
• Patented Tooth Design — Vortex's unique tooth profile increases sprocket longevity and reduces chain wear
• CNC Precision Manufactured — tight tolerances ensure concentricity, smooth chain engagement, and quiet operation
• Made in the USA — Vortex has manufactured high-performance racing components since 1995

The 523ZR-40 is a direct bolt-on replacement or gearing upgrade for a wide range of sport motorcycles. Vortex steel sprockets are an ideal choice for riders who prioritize durability over weight savings, especially for street riding, commuting, or track day use where longevity is paramount.