Vortex 193AZK-41 CAT5 Rear Aluminum Sprocket 41T Black 520 Pitch

The Vortex 193AZK-41 is a lightweight CAT5 series rear aluminum sprocket designed for motorcycle racing and performance street applications. Engineered for 520-pitch chain drives, this 41-tooth sprocket delivers a meaningful reduction in rotating mass compared to steel alternatives, improving throttle response and power transfer to the rear wheel.

Vortex's signature CAT5 manufacturing process starts with anodizing the sprocket in color first, then CNC machining from high-grade 7075 aluminum — resulting in the iconic two-tone finish with vibrant black anodizing and contrasting bright silver machined highlights. Every sprocket is 100% CNC manufactured in the U.S.A. to tight tolerances using a specially formulated alloy per Vortex's own specifications.

Key Features:

• Material: 7075 aerospace-grade aluminum — lightweight yet strong
• Chain Pitch: 520
• Tooth Count: 41 teeth
• Color/Finish: Black anodized with silver machined highlights
• Saber Tooth groove design — unique tooth profile increases sprocket longevity and improves chain engagement
• 100% CNC manufactured in the U.S.A. to precise tolerances
• Anodized before machining for a durable, two-tone appearance
• Trusted by professional and championship-level racing teams

As with all aluminum sprockets, proper chain maintenance is important — chains should be cleaned and tensioned every 300–400 miles to maximize sprocket life. The Vortex 193AZK-41 is a direct-fit performance upgrade for riders seeking reduced unsprung weight and improved drivetrain efficiency.