Vortex 193AZK-52 CAT5 Aluminum Rear Sprocket 52T 520 Black

The Vortex 193AZK-52 is a CAT5 series aluminum rear sprocket featuring 52 teeth, designed for 520 chain pitch applications. Machined from 7075 T6 billet aluminum, this sprocket delivers an excellent strength-to-weight ratio, reducing rotating mass for improved throttle response and quicker acceleration and deceleration.

The sprocket is anodized before machining — Vortex's process of anodizing first — to create a hardened surface layer that resists wear and corrosion while maintaining a clean, durable black finish. Vortex's proprietary CAT5 tooth profile is engineered for smooth, precise chain engagement and optimal power transfer under race and street conditions.

Key Features:

• 52-tooth rear sprocket — suits applications requiring a lower final drive ratio for increased top-end speed
• 520 chain pitch compatible
• 7075 T6 billet aluminum construction — lightweight and strong
• Anodized black finish (AZK designation) — hard-anodized before final machining for enhanced surface durability
• CAT5 tooth profile — proprietary design for improved chain engagement and power delivery
• CNC machined to tight tolerances for consistent fitment and balance
• Designed for BMW motorcycle applications (193-series bolt pattern)

Vortex Racing is a U.S.-based manufacturer with over 15 years of experience producing precision motorcycle racing components trusted by professional race teams worldwide. The 193AZK-52 is a direct upgrade over OEM sprockets for riders seeking reduced unsprung weight and improved drivetrain performance.