Vortex 775ZK-50 Aluminum Rear Sprocket 50T

The Vortex 775ZK-50 is a lightweight, high-performance aluminum rear sprocket featuring a 50-tooth count, designed for riders seeking improved acceleration and drivetrain performance. Machined from 7075-T6 aircraft-grade aluminum, this sprocket delivers an exceptional strength-to-weight ratio while significantly reducing unsprung and rotating mass compared to steel OEM sprockets.

Key Features:

• 50-Tooth count for tuned acceleration and lower-end power delivery
• Machined from 7075-T6 aircraft-grade aluminum for maximum durability and minimal weight
• Hard anodized finish for corrosion resistance and long service life
• Precision CNC machined to exacting tolerances for smooth, consistent chain engagement
• ZK carrier/hub pattern — verify fitment with your specific application
• Designed for use with standard 520, 525, or 530 chain pitch (verify for your application)
• Compatible with Vortex quick-change sprocket carriers where applicable

Vortex Racing sprockets are a popular OEM-quality upgrade for street riders and track day enthusiasts alike, offering a direct bolt-on replacement with measurable performance benefits. The 775ZK-50 is an excellent choice for riders who want to optimize gear ratios for specific track configurations or riding conditions.