Vortex 641-55 Silver 55-Tooth Aluminum Rear Sprocket

The Vortex 641-55 is a silver, 55-tooth aluminum rear sprocket built for sportbike riders who demand race-proven performance. Part of Vortex's stunt and performance sprocket lineup, the 641-55 is engineered to withstand demanding riding conditions while delivering reliable, consistent power transfer.

Key Features:

• 55-Tooth stunt-oriented design — ideal for aggressive street and stunt riding applications
• 7075 aircraft-grade aluminum construction — lightweight material that reduces rotating mass and helps maximize power to the rear wheel
• 100% CNC machined in the USA — precision-manufactured to the tightest tolerances for consistent fit and performance
• Vortex patented tooth profile — unique tooth geometry engineered to increase sprocket longevity and reduce chain wear
• Specially formulated alloy — produced to Vortex's own material specifications for superior strength-to-weight ratio
• Silver anodized finish — resists corrosion and provides a clean, classic appearance

Vortex Racing has been manufacturing top-quality motorcycle components for road racing, motocross, supercross, and stunt riding since 1995. Their products are tested directly by professional race teams worldwide, making the 641-55 a trusted choice for both track and street performance upgrades.