Vortex 641AZK-40 Aluminum Rear Sprocket 40 Tooth

The Vortex 641AZK-40 is a high-performance aluminum rear sprocket designed for serious motorcycle enthusiasts seeking weight savings without sacrificing durability. This 40-tooth sprocket is precision-machined from 7075-T6 aluminum alloy, offering significant weight reduction compared to steel sprockets while maintaining excellent strength and wear resistance.

Key Features:

• 40-tooth configuration for optimal gear ratio tuning
• Lightweight 7075-T6 aluminum construction reduces rotational mass
• Hard-anodized black finish for corrosion resistance and extended life
• CNC-machined for precise fitment and smooth chain engagement
• Self-cleaning mud groove design helps shed debris
• Laser-etched tooth count marking for easy identification

Vortex sprockets are manufactured to exacting tolerances to ensure proper chain alignment and minimize wear on your drive system. The aluminum construction makes this sprocket ideal for racing applications or riders looking to reduce unsprung weight for improved handling and acceleration response.