Vortex 193AZOV4-47 Aluminum Rear Sprocket Silver Anodized Aftermarket Wheel Sprockets - 47T

The Vortex 193AZOV4-47 is a 47-tooth aluminum rear sprocket designed for compatibility with aftermarket wheels including OZ, Marchesini, CoreMoto, BST, and Rotobox fitments. Machined in the USA from aerospace-grade alloys to Vortex's exacting specifications, this sprocket delivers a meaningful reduction in rotating mass over a stock steel unit — translating directly to improved throttle response and drive feel.

Key Features:

• 47-Tooth rear sprocket — bolt-on gearing option for fine-tuning acceleration and top speed
• 7075 T6 billet aluminum construction — lightweight yet engineered for high-strength performance use
• Silver anodized finish — hard anodized surface provides corrosion resistance and lasting appearance
• Patented Vortex tooth profile — saber-tooth groove geometry increases sprocket longevity and smooth chain engagement
• CNC machined in the USA — manufactured to tight tolerances for precise fitment and consistent performance
• Compatible with 520 chain pitch — fits OEM 520 applications or suitable 520 conversion setups
• Aftermarket wheel bolt pattern (OV4) — designed to fit OZ, Marchesini, CoreMoto, BST, Rotobox, and similar aftermarket wheel hubs

Vortex Racing rear sprockets are trusted by professional race teams competing in Motocross, Supercross, Road Racing, and Flat Track. Reducing rotational mass at the wheel improves acceleration, deceleration response, and directional changes — making this sprocket a worthwhile upgrade for both track and aggressive street use.