Vortex 255AZB-50 Aluminum Rear Sprocket Pitch Azure Blue Sprockets - CAT5 520 50-Tooth

The Vortex 255AZB-50 is a CAT5 aluminum rear sprocket featuring a 520 chain pitch and 50 teeth, finished in a striking Azure Blue anodize. Engineered by Vortex Racing — a U.S.-based manufacturer with a proven track record in professional motorcycle competition — this sprocket delivers an ideal combination of lightweight performance and long-lasting durability.

Key Features:

• 520-pitch rear sprocket compatible with 520-series drive chains
• 50-tooth count for fine-tuned gear ratio adjustment and improved low-end acceleration
• Machined from aerospace-grade aluminum for significant weight reduction over steel alternatives
• Azure Blue anodized finish provides corrosion resistance and a clean, race-inspired appearance
• CAT5 construction with Vortex's patented tooth profile for extended sprocket and chain life
• Precision CNC-machined to tight tolerances for consistent power transfer and smooth chain engagement
• Lightening holes reduce rotational mass for improved throttle response

Vortex Racing sprockets are tested and validated by professional race teams across Supercross, Motocross, Road Racing, and Flat Track disciplines. The 255AZB-50 is a direct bolt-on fitment replacement or upgrade option, allowing riders to optimize their gear ratio without sacrificing quality or reliability.