Vortex 255BZB-42 525-Pitch 42-Tooth Black Steel Rear Sprocket

The Vortex 255BZB-42 is a 525-pitch, 42-tooth black steel rear sprocket engineered for street and performance motorcycle applications. Manufactured 100% in the USA, this sprocket is machined from a specially formulated carbon steel alloy to Vortex's exacting specifications, then electro-plated with a satin black finish to resist corrosion and deliver a clean, aggressive look.

Key Features:

• 525 pitch — designed for 525-series drive chains
• 42 teeth — stock-equivalent gearing for balanced acceleration and top-speed performance
• Black (BZB) electro-plated finish — satin black coating bonds to the steel surface to prevent corrosion
• Vortex patented tooth design — engineered to extend sprocket longevity and reduce chain wear
• 100% CNC machined in the USA — manufactured to the tightest tolerances in the industry
• Weight-optimized construction — cupped profile from tooth ring to body minimizes rotating mass without sacrificing strength
• Drop-in replacement for OEM sprockets on compatible 525-pitch applications

Vortex Racing has been a trusted name in motorcycle performance drivetrain components for over 15 years, with products proven at the highest levels of road racing, motocross, and supercross competition. The 255BZB-42 delivers OEM-compatible fitment with the durability and precision that racers and street riders demand.