Vortex 611ZR-51 Steel Rear Sprocket Pitch Sprockets - 520 51-Tooth Black

The Vortex 611ZR-51 is a 520-pitch steel rear sprocket with 51 teeth, finished in an electro-plated satin black coating. Engineered by Vortex Racing for motorcycle applications requiring durable, precision-manufactured drivetrain components, this sprocket is built to exacting tolerances for reliable power transfer and long service life.

Key Features:

• 520 Pitch: Compatible with standard 520-pitch chain and sprocket setups
• 51 Teeth: Ideal for tuning gear ratios toward improved low-end torque and acceleration
• Carbon Steel Construction: Provides exceptional strength and resistance to wear under hard use
• Electro-Plated Satin Black Finish: Resists corrosion and delivers a clean, factory-style appearance
• Hardened Teeth: Engineered to maintain tooth integrity over many miles of use
• Precision CNC Manufactured: Made to tight tolerances ensuring concentricity and proper chain engagement
• Direct Replacement or Gearing Upgrade: Suitable for OEM replacement or gearing customization

Vortex Racing is a U.S.-based manufacturer with a long track record of producing top-quality components for Motocross, Supercross, Road Racing, and Flat Track Racing. Each sprocket is tested with feedback from professional race teams to ensure it meets the demands of real-world performance riding.