Vortex 491AZB-47 Aluminum Rear Sprocket 47T

The Vortex 491AZB-47 is a high-performance 47-tooth aluminum rear sprocket engineered for competitive street and track use. Machined from lightweight, high-strength aluminum alloy, this sprocket delivers a significant weight savings over stock steel sprockets without sacrificing durability under demanding riding conditions.

Key Features:

• 47-tooth rear sprocket for increased acceleration and low-end torque
• Precision CNC-machined from aircraft-grade aluminum alloy
• Anodized finish in blue (AZB) for corrosion resistance and lasting appearance
• Lightweight construction reduces unsprung and rotating mass
• Precise tooth geometry for smooth, consistent chain engagement
• Direct OEM-replacement fit — no modifications required

The 491AZB series features a bolt pattern and carrier interface designed for a specific application range. The anodized blue finish not only adds a distinctive look but also helps protect the sprocket surface from wear and oxidation. Whether upgrading for track days or replacing a worn sprocket on the street, the Vortex 491AZB-47 is a proven choice trusted by racers and enthusiasts worldwide.