Vortex 154-66 Aluminum Rear Sprocket 66-Tooth

The Vortex 154-66 is a 66-tooth aluminum rear sprocket engineered for riders seeking significant gearing changes for low-speed torque, stunt riding, or off-road trail applications. Part of Vortex Racing's proven aluminum sprocket lineup, this sprocket delivers a lightweight performance upgrade over heavier OEM steel sprockets.

Key Features:

• 66-Tooth Rear Sprocket — provides a tall rear gear ratio ideal for maximizing low-end torque and acceleration
• Lightweight Aluminum Construction — reduces rotating mass compared to steel sprockets for improved throttle response
• Vortex Patented Tooth Design — unique tooth profile engineered to extend sprocket longevity and reduce chain wear
• CNC Machined Precision — tight tolerances ensure a concentric fit for smooth, consistent chain engagement
• Hard-Coat Anodized Finish — durable surface treatment resists corrosion and wear for extended service life
• Weight Reduction Cutouts — precision-machined lightening pockets minimize unsprung and rotating weight

The Vortex 154-66 rear sprocket is a direct-fit replacement designed to work with the correct pitch chain for your application. At 66 teeth, this sprocket is popular for stunt bikes, trail riding builds, and any application requiring increased low-end grunt and reduced top speed. Always replace the chain and front sprocket simultaneously when installing a new rear sprocket to ensure optimal wear and performance.