Vortex 642AZOV4-42 VTX Aluminum Rear Sprocket Anodized Sprockets - 42-Tooth

The Vortex 642AZOV4-42 is a 42-tooth aluminum rear sprocket built for riders who demand lightweight performance and precision engineering. 100% CNC machined from aerospace-grade billet aluminum, this sprocket delivers a significant weight reduction over OEM steel units, reducing rotating mass for sharper throttle response and improved acceleration.

Key Features:

• 42-Tooth rear sprocket for optimized gear ratio tuning
• 7075 T6 billet aluminum construction — lightweight yet strong
• 100% CNC machined in the USA to tight tolerances
• Anodized finish for corrosion resistance and long-lasting appearance
• Vortex patent-pending saber tooth groove design for reduced chain friction
• Reduces rotating mass compared to stock steel sprockets for improved acceleration and handling
• Available as part of the Vortex VTX sprocket lineup — trusted by professional race teams worldwide

Vortex Racing has been a trusted name in American-made motorcycle performance components for over 15 years, supplying top professional race teams in Motocross, Supercross, Road Racing, and Flat Track Racing. The 642AZOV4-42 sprocket is a direct-fit replacement designed to deliver race-proven performance on the street or track.