Vortex 491AZK-47 CAT5 Aluminum Rear Sprocket 520 Pitch 47 Tooth Black

The Vortex 491AZK-47 is a CAT5 aluminum rear sprocket featuring a 520 pitch chain interface and 47 teeth, finished in a durable black hardcoat anodize. Designed for performance street and track applications, this sprocket delivers a lightweight alternative to steel without sacrificing strength or longevity.

Key Features:

• CAT5 aluminum construction — specially formulated alloy per Vortex specifications for optimal strength-to-weight ratio
• 520 pitch — compatible with standard and 520 conversion chain setups
• 47 teeth — rear sprocket tooth count for fine-tuning gear ratios and acceleration
• Black hardcoat anodized finish — provides superior corrosion resistance and surface hardness compared to standard anodize
• Unique Vortex patented tooth design — increases sprocket longevity and improves chain engagement
• 100% CNC manufactured in the USA — precision machined to tight tolerances for concentricity and consistent fit
• Significantly lighter than steel sprockets, reducing unsprung and rotational mass

Vortex rear sprockets are a trusted choice for riders looking to optimize power transfer and reduce drivetrain weight. The black hardcoat finish of the AZK series offers added surface durability ideal for aggressive street riding or track day use.