Vortex 642A-51 Aluminum Rear Sprocket 51 Tooth

The Vortex 642A-51 is a precision-engineered aluminum rear sprocket featuring 51 teeth, designed to deliver championship-level performance for sport bikes and street motorcycles. Manufactured from high-grade 7075-T6 aluminum alloy, this sprocket offers an optimal balance of lightweight construction and exceptional durability for demanding riding conditions.

Key Features:

• 51-tooth aluminum construction for reduced unsprung weight
• Precision CNC-machined to industry-leading tolerances for smooth operation
• 7075-T6 aluminum alloy provides excellent strength-to-weight ratio
• Hard-anodized finish in silver for corrosion resistance and long service life
• Self-cleaning mud grooves help maintain performance in varied conditions
• Manufactured to exact OEM specifications for proper fitment

Vortex sprockets are trusted by professional racers worldwide and undergo rigorous testing to ensure consistent performance on the track and street. Each sprocket is designed with tight tolerances to minimize chain wear and provide smooth power transfer throughout the RPM range.