Vortex 120AZK43 Rear Aluminum Sprocket Pitch Sprockets - CAT5 520 43-Tooth Black

The Vortex 120AZK43 is a 43-tooth, 520-pitch CAT5 aluminum rear sprocket finished in a black anodized hardcoat. Engineered and manufactured in the USA, this sprocket is built to racing tolerances and delivers a significant weight reduction over stock steel sprockets — directly reducing rotating mass and improving throttle response, acceleration, and overall drivetrain efficiency.

Key Features:

• CAT5 Aluminum Construction — Lightweight racing-grade aluminum machined to tight tolerances
• 100% CNC Manufactured in the USA — Precision machined from specially formulated alloy per Vortex specifications
• Black Anodized Finish — Hard anodized with PTFE coating for enhanced surface durability and reduced friction
• Saber Tooth Groove Design — Vortex's patent-pending unique tooth profile increases sprocket longevity and promotes smooth chain engagement
• 520 Chain Pitch — Compatible with 520 size OEM applications or suitable 520 conversion setups
• 43 Teeth — Rear sprocket tooth count for application-specific gearing

Vortex Racing sprockets are trusted by professional race teams worldwide and proven at the highest levels of road racing, flat track, and supercross competition. The 120AZK43 is part of the 120A sprocket family, designed for Ducati-pattern bolt configurations. Anodized color may vary slightly as it is an anodized product.