Vortex 523ZK-48 CAT5 Aluminum Rear Sprocket 520 Pitch 48-Tooth Black

The Vortex 523ZK-48 is a CAT5-series aluminum rear sprocket featuring a 520 pitch and 48 teeth in a black anodized finish. Precision-engineered for motorcycle racing and performance street applications, this sprocket delivers a significant weight reduction over OEM steel units, helping to reduce rotating mass for improved throttle response and acceleration.

Key Features:

• 520 Pitch — compatible with 520-series chains
• 48 Teeth — tuned gearing for enhanced low-end torque and acceleration
• Black Anodized Finish — corrosion-resistant with contrasting silver machined accents
• Lightweight Aluminum Construction — specially formulated alloy per Vortex specifications reduces rotating mass versus stock steel sprockets
• 100% CNC Manufactured in the U.S.A. — machined to precise tolerances for concentricity and durability
• Patented Tooth Design — Vortex's unique saber-tooth groove profile increases sprocket longevity
• Lightening holes throughout the carrier further reduce unsprung rotational weight

Vortex Racing is a U.S.-based manufacturer trusted by professional race teams in Motocross, Supercross, Road Racing, and Flat Track. Every component is built to the tightest tolerances using the best quality materials in the industry, then validated through direct track testing with top-tier professional teams worldwide.