Vortex 817-66 Rear Sprocket 66T

The Vortex 817-66 is a 66-tooth rear sprocket designed for sportbike applications requiring precise drivetrain performance. Manufactured by Vortex Racing, this sprocket is CNC-machined from high-quality steel or aluminum (depending on variant) to deliver consistent chain engagement, reduced drivetrain wear, and reliable power transfer.

Key Features:

• 66-tooth rear sprocket configuration for optimized gear ratio and acceleration
• CNC-machined construction for tight tolerances and consistent performance
• Designed to match OEM sprocket carrier bolt patterns for direct bolt-on fitment
• Compatible with standard motorcycle drive chain pitches
• Vortex Racing quality — trusted by racers and street riders alike

The Vortex 817-66 rear sprocket is an ideal upgrade or replacement for riders looking to fine-tune their motorcycle's acceleration and top-speed characteristics. Always pair with a compatible front sprocket and drive chain for optimal drivetrain longevity.