Vortex 208B-66 Black 66-Tooth 520 Aluminum Rear Sprocket

The Vortex 208B-66 is a lightweight, high-performance 66-tooth aluminum rear sprocket designed for 520-pitch chain applications. CNC-machined 100% in the USA from a specially formulated aluminum alloy per Vortex specifications, this sprocket delivers race-proven durability and precision fitment.

The black anodized finish provides corrosion resistance and a clean, aggressive look, while Vortex's patented tooth geometry helps extend sprocket and chain life by reducing wear and friction. At 66 teeth, this is a high-ratio rear sprocket well-suited for off-road, motocross, trail riding, and stunt applications where increased low-end torque and acceleration are the priority.

Key Features:

• 66-tooth, 520-pitch rear sprocket
• Lightweight aluminum construction reduces rotating mass for improved acceleration
• 100% CNC manufactured in the USA
• Specially formulated aluminum alloy per Vortex specifications
• Black anodized finish for corrosion resistance
• Patented Vortex tooth design for extended sprocket and chain longevity
• Precision-machined for concentric fit and smooth power delivery

The Vortex 208B-66 is a direct upgrade over stock steel sprockets, offering significant weight savings that translate to reduced drivetrain inertia and snappier throttle response. It is the black anodized counterpart to the silver 208-66.