Vortex 775AZOV4-47 Aluminum Rear Sprocket Aftermarket Wheel Sprockets - 47-Tooth 520-Pitch

The Vortex 775AZOV4-47 is a 47-tooth, 520-pitch aluminum rear sprocket designed for motorcycles equipped with aftermarket wheels using the OV4 bolt carrier pattern (compatible with OZ, Marchesini, CoreMoto, BST, Rotobox, and similar aftermarket wheel hubs). Built to the exacting standards that have made Vortex the go-to sprocket brand in professional road racing, this sprocket delivers an ideal balance of weight savings and durability for both track and aggressive street use.

Key Features:

• 7075-T6 billet aluminum construction — aerospace-grade alloy providing exceptional strength-to-weight ratio
• 100% CNC machined in the USA — precision manufacturing ensures perfect concentricity and consistent chain engagement
• 47-tooth rear sprocket — allows fine-tuning of final drive ratio for acceleration or top speed
• 520 chain pitch — compatible with standard 520-pitch drive chains
• Aftermarket wheel fitment (OV4 carrier) — designed specifically for OZ, Marchesini, CoreMoto, BST, Rotobox, and similar high-performance aftermarket wheel hubs
• Lightening holes and unique tooth profile — reduces rotating mass and extends sprocket longevity
• Hard anodized finish — resists corrosion and wear for long service life
• Trusted by professional racers and champions worldwide

Vortex sprockets are engineered to achieve maximum lightness and strength, reducing rotating mass to help deliver more power to the pavement. Whether you are preparing for a track day or upgrading your street bike's drivetrain, the 775AZOV4-47 is a proven, race-quality component that installs with no modifications required.