Vortex 642A-66 Aluminum Rear Sprocket 520 Pitch 66 Tooth Silver

The Vortex 642A-66 is a precision-engineered aluminum rear sprocket designed and machined from high-quality 7075 aerospace aluminum for exceptional strength-to-weight ratio. This 66-tooth sprocket features a 520 pitch and comes in a silver finish, making it ideal for stunt riding applications and aggressive gearing modifications.

Key Features:

• 100% CNC machined with saber tooth grooves for enhanced chain engagement and longevity
• Made with the highest quality 7075 T6 aluminum for superior durability and reduced weight
• Made in USA to exacting quality standards
• Vortex patent pending design unlike any other sprocket on the market
• 66-tooth configuration provides excellent low-end torque and easier wheelie control
• 520 pitch conversion allows for lighter drivetrain components

The 55-60 tooth range in the rear is the most popular for stunt bikes, making this 66-tooth option ideal for riders seeking maximum torque multiplication and control. The lightweight aluminum construction reduces unsprung weight while maintaining the strength needed for demanding riding conditions. Compatible with a wide range of sport bikes and stunt motorcycles using 520-pitch chain systems.