Vortex 775A-39 Silver 39-Tooth 520-Pitch Aluminum Rear Sprocket

The Vortex 775A-39 is a lightweight aluminum rear sprocket featuring 39 teeth and 520 pitch chain compatibility. This high-performance racing sprocket is designed to reduce rotating mass while maintaining exceptional durability for street and track applications.

Key Features:

• 100% CNC machined in the USA from specially formulated F5 aluminum alloy
• 39-tooth count for 520-pitch chain applications
• Patented saber tooth groove design increases sprocket longevity
• Silver anodized finish prevents corrosion
• Lightweight construction reduces rotating mass for improved acceleration
• Precision-manufactured to tight tolerances for smooth power delivery

Vortex Racing sprockets are trusted by professional race teams worldwide and manufactured to exacting specifications for maximum performance and reliability. The aluminum construction significantly reduces weight compared to steel sprockets while the unique tooth profile ensures extended service life.