Vortex 775BZR-51 Aluminum Rear Sprocket 520 Pitch 51-Tooth Blue

The Vortex 775BZR-51 is a 51-tooth aluminum rear sprocket designed for 520-pitch chain drive systems. Featuring a striking blue anodized finish, this sprocket is CNC-machined from a specially formulated aluminum alloy to Vortex's exacting specifications, delivering an ideal combination of lightweight performance and durability.

Key Features:

• 51 teeth for optimized final drive gearing
• 520 chain pitch compatibility
• Blue anodized finish for corrosion resistance and visual appeal
• CNC-machined from high-grade aluminum alloy per Vortex specifications
• Unique Vortex tooth profile design for increased sprocket longevity and smooth chain engagement
• Significantly lighter than OEM steel sprockets, reducing rotating mass
• Precision-machined mounting holes for accurate, secure fitment

Switching to a lightweight aluminum rear sprocket like the Vortex 775BZR-51 reduces unsprung and rotating weight, contributing to improved acceleration response and more precise handling. The blue anodized surface provides both an attractive appearance and a layer of protection against everyday wear and corrosion. Vortex sprockets are a popular upgrade for street riders and track enthusiasts seeking a direct OEM-replacement performance sprocket.