Vortex 641-40 Silver 40-Tooth Aluminum Rear Sprocket

The Vortex 641-40 is a 40-tooth silver aluminum rear sprocket engineered for motorcycle road racing and high-performance street riding. Part of Vortex Racing's 641 series, this sprocket is 100% CNC machined in the USA from a specially formulated aluminum alloy per Vortex's own specifications, delivering the precision fit and durability demanded by competitive riders.

Key Features:

• 40-Tooth Rear Sprocket — ideal for fine-tuning final drive gearing
• 100% CNC machined in the USA to the tightest tolerances
• Specially formulated aluminum alloy per Vortex specifications for optimal strength-to-weight ratio
• Silver anodized finish to resist corrosion and maintain appearance
• Patented unique tooth design increases sprocket longevity and chain wear life
• Lightweight construction reduces rotating mass and improves power delivery to the rear wheel

Vortex Racing is a U.S.-based manufacturer with over 15 years of experience producing top-quality motorcycle racing components for Road Racing, Motocross, Supercross, Flat Track, and Minibikes. Every component is made to exacting standards with direct feedback from professional race teams worldwide.