Vortex 611ZR-37 Aluminum Rear Sprocket 37T

The Vortex 611ZR-37 is a high-performance 37-tooth aluminum rear sprocket engineered for sport and street motorcycle applications. Machined from lightweight 7075-T6 aluminum alloy, this sprocket delivers an exceptional strength-to-weight ratio, helping reduce unsprung rotational mass for improved throttle response and acceleration.

Key Features:

• 37 Teeth — direct replacement or performance gearing option
• 7075-T6 Aluminum Construction — high-strength alloy for durability with minimal weight penalty
• Hard Anodized Finish — resists corrosion and wear for extended service life
• CNC Machined — precision tolerances ensure smooth, consistent chain engagement
• Lightening Holes — strategically designed cutouts further reduce rotating mass
• ZR Series — Vortex's proven aluminum rear sprocket platform

The Vortex 611ZR-37 is a direct OEM-style fitment replacement or gearing upgrade, compatible with standard 520 or application-specific chain pitch depending on fitment. Vortex Racing sprockets are a trusted choice among track riders and street enthusiasts seeking performance-grade drivetrain components at a competitive price point.