Vortex 422ZO-40 Aluminum Rear Sprocket 420 Pitch 40 Tooth

The Vortex 422ZO-40 is a high-performance aluminum rear sprocket designed for 420 pitch chain applications. This 40-tooth sprocket is precision CNC machined from 7075-T6 aluminum, offering exceptional strength while significantly reducing rotating mass compared to stock steel sprockets.

Key Features:

• 420 chain pitch with 40 teeth configuration
• CNC machined from 7075-T6 aluminum for superior strength-to-weight ratio
• Patented Vortex tooth design increases sprocket longevity and reduces chain wear
• Anodized finish prevents corrosion and maintains appearance
• Lightening holes reduce rotating mass for improved acceleration
• Manufactured in the USA to precise tolerances for perfect concentricity

Ideal for mini bikes and pit bikes including Honda Grom, Honda Monkey, XR50/CRF50, and Kawasaki Z125 models. The reduced weight of aluminum construction improves throttle response and acceleration while the unique tooth profile extends the life of both the sprocket and chain.