Vortex 839AZKV4-40 VTX Aluminum Rear Sprocket 40T

The Vortex 839AZKV4-40 is a 40-tooth aluminum rear sprocket from Vortex's VTX series, engineered for performance motorcycle applications. Vortex sprockets are manufactured from 7075-T6 billet aluminum and hard anodized for exceptional durability, corrosion resistance, and long service life.

Key Features:

• 40 Teeth – Direct-fit rear sprocket for precise gear ratio tuning
• 7075-T6 Billet Aluminum Construction – Lightweight yet strong material reduces unsprung rotational mass
• Hard Anodized Finish – Provides superior wear resistance and corrosion protection
• CNC Machined – Precision cut for accurate tooth profile and consistent chain engagement
• VTX Series – Vortex's performance-focused aluminum sprocket line designed for street and track use
• Direct OEM Replacement – Bolt-on fitment with no modifications required

Replacing a stock steel sprocket with a lightweight Vortex aluminum unit can noticeably reduce drivetrain weight and improve throttle response. The hard anodized surface treatment ensures the sprocket holds up under aggressive riding conditions while maintaining the weight savings of aluminum construction.