Vortex 642A-40 Aluminum Rear Sprocket Conversion Sprockets - 520 40T Silver

The Vortex 642A-40 is a high-performance aluminum rear sprocket designed for 520 chain conversion applications. This precision-engineered sprocket features 40 teeth and is manufactured from lightweight 7075-T6 billet aluminum for optimal strength-to-weight ratio on sport bikes and racing motorcycles.

Key Features:

• 100% CNC machined from 7075-T6 billet aluminum for maximum durability
• Patented saber tooth groove design increases sprocket longevity
• Lightweight construction reduces unsprung weight for improved handling
• 520-pitch conversion sprocket with 40-tooth configuration
• Silver anodized finish for corrosion resistance
• Manufactured to tight tolerances for precise fitment

Vortex Racing sprockets are designed and tested by professional race teams in Motocross, Supercross, and Road Racing competition. Each sprocket is machined to exacting specifications to ensure reliable performance under demanding conditions. The unique tooth profile design helps extend sprocket life while maintaining consistent chain engagement throughout the life of the component.