Vortex 491AZK-41 Black 41-Tooth 520-Pitch Aluminum Rear Sprocket

The Vortex 491AZK-41 is a 41-tooth, 520-pitch aluminum rear sprocket finished in a durable black hardcoat anodize. Precision-engineered for sport motorcycle and powersports applications, this sprocket delivers a significant weight savings over OEM steel units, reducing rotating mass for improved throttle response and more agile handling.

Key Features:

• Material: Lightweight aluminum alloy, specially formulated per Vortex specifications
• Finish: Black hardcoat anodized with PTFE coating for enhanced durability and corrosion resistance
• Pitch: 520
• Teeth: 41T
• Manufacturing: 100% CNC machined in the USA to precise tolerances
• Tooth Design: Vortex patented saber tooth groove design for extended sprocket longevity
• Weight Reduction: Lightweight construction reduces rotating mass compared to OEM steel sprockets, aiding power delivery to the ground

The 491AZK series is offered in a range of tooth counts (37T–54T) to suit stock replacement or custom gearing setups. The black hardcoat PTFE finish provides superior wear resistance while giving the drivetrain a clean, aggressive look. As with all Vortex sprockets, this unit is manufactured to exacting standards, ensuring concentricity and quiet, smooth operation.