Vortex 671ZB-51 Aluminum Rear Sprocket 420 Pitch 51 Tooth Blue

The Vortex 671ZB-51 is a high-performance aluminum rear sprocket designed for motorcycles and pit bikes running a 420-pitch chain. This precision-engineered sprocket features 51 teeth and is finished in Vortex's distinctive blue anodized coating for both corrosion resistance and eye-catching style.

Key Features:

• Constructed from high-grade 7075-T6 aluminum alloy for exceptional strength-to-weight ratio
• 51-tooth configuration for optimized gearing performance
• 420 chain pitch compatibility
• Blue anodized finish provides corrosion protection and distinctive appearance
• CNC-machined to tight tolerances for precise fit and smooth operation
• Hardened teeth design increases sprocket longevity and wear resistance
• Significantly lighter than steel sprockets, reducing unsprung weight

Vortex Racing sprockets are manufactured in the USA by motorcycle racers for racers, ensuring each component meets the demanding standards of professional racing teams. The aluminum construction offers weight savings over traditional steel sprockets while maintaining the durability needed for track and street use. The 420 pitch makes this sprocket ideal for smaller displacement motorcycles, pit bikes, and youth racing applications.