Vortex 436ZKV4-40 VTX Aluminum Rear Sprocket Pitch Sprockets - 40-Tooth 520

The Vortex 436ZKV4-40 is a 40-tooth aluminum rear sprocket from Vortex's VTX series, engineered for performance motorcycle applications. Constructed from lightweight, high-strength aluminum alloy, this sprocket delivers a significant weight savings over OEM steel units without sacrificing durability or reliability on the street or track.

Key Features:

• Material: CNC-machined high-strength aluminum alloy for reduced unsprung weight
• Tooth Count: 40 teeth
• Chain Pitch: 520 series chain compatible
• Finish: Hard anodized for corrosion resistance and extended wear life
• Precision CNC machined for exact tolerances and smooth chain engagement
• Lightening cuts throughout the sprocket body to minimize rotational mass
• Direct bolt-on fitment — no modifications required
• Manufactured to meet or exceed OEM specifications

Vortex sprockets are a trusted upgrade among sport bike and track day enthusiasts seeking a performance edge. The VTX aluminum rear sprocket pairs seamlessly with Vortex front sprockets and 520 drive chains for a complete drivetrain solution. Always verify sprocket carrier compatibility with your specific motorcycle model before installation.