Vortex 840CZKV4-40 VTX Aluminum Rear Sprocket Pitch Sprockets - 40T 520

The Vortex 840CZKV4-40 is a 40-tooth aluminum rear sprocket from Vortex Racing's VTX series, designed for high-performance motorcycles running a 520 pitch chain. Machined from lightweight 7075-T6 billet aluminum, this sprocket delivers significant unsprung weight savings compared to a stock steel sprocket without sacrificing durability on street or track applications.

Key Features:

• 40 Teeth — direct OEM-equivalent tooth count for standard gearing
• 520 Chain Pitch — compatible with OEM and aftermarket 520 chain conversions
• 7075-T6 Billet Aluminum Construction — high-strength alloy for reduced rotational mass
• Hard Anodized Finish — resists wear and corrosion for extended service life
• CNC Machined — precision tooth profile for smooth, quiet chain engagement
• Lightening Pockets — strategically machined cutouts further reduce weight
• Direct Bolt-On Fitment — uses factory mounting hardware with no modifications required

Vortex Racing is a trusted name in motorcycle performance sprockets, supplying teams competing in MotoAmerica, World Superbike, and club racing worldwide. The VTX aluminum rear sprocket is an ideal upgrade for riders looking to reduce drivetrain weight and improve throttle response. Compatible with Vortex steel and aluminum front sprockets for a complete drivetrain package.