Vortex 211ZK-43 CAT5 Aluminum Rear Sprocket 43T Black 520-Pitch

The Vortex 211ZK-43 is a lightweight CAT5 aluminum rear sprocket engineered for performance riders who demand precision, durability, and style. Manufactured from a specially formulated aluminum alloy to Vortex's own specifications, this 43-tooth, 520-pitch sprocket is 100% CNC-machined in the USA for consistent, race-quality tolerances.

The CAT5 series features Vortex's signature color anodizing process, which excludes the sweeps, mud grooves, and teeth — leaving those areas with a contrasting silver machine-cut finish. The result is a bold black body with bright silver highlights that set it apart from standard sprockets.

Key Features:

• CAT5 lightweight aluminum construction — reduces rotating mass for improved acceleration
• 100% CNC-machined in the USA — precision-crafted to tight tolerances
• Specially formulated alloy per Vortex's own material specifications
• Vortex patented tooth design — engineered to maximize sprocket longevity and chain engagement
• Color anodized finish — black anodizing with contrasting silver machine cuts on teeth, mud grooves, and sweeps
• Available in 4 colors — black, red, blue, and gold (availability varies by application)
• 43 teeth / 520 pitch — direct replacement fitment

Vortex rear sprockets are trusted by racers and enthusiasts alike for their combination of lightweight performance and impressive service life. The patented tooth profile promotes smooth, efficient power transfer while reducing wear on both the sprocket and chain.