Vortex 527ZK-38 CAT5 Rear Aluminum Sprocket 530-Pitch 38-Tooth Black

The Vortex 527ZK-38 is a lightweight CAT5 rear aluminum racing sprocket designed for performance riders who demand precision, durability, and a distinct look. Built to 530 pitch with 38 teeth, this sprocket is 100% CNC machined in the USA from a specially formulated aluminum alloy developed to Vortex's exacting specifications.

Finished in a black anodized coating that excludes the sweeps, mud grooves, and teeth, the result is a striking contrast between the bold black body and bright silver machined highlights — functional aesthetics that set it apart from standard OEM steel sprockets. The reduced rotating mass of aluminum construction contributes to improved acceleration and more responsive handling.

Key Features:

• 530 Pitch — 38 teeth rear sprocket
• CAT5 aluminum construction — significantly lighter than OEM steel sprockets
• 100% CNC manufactured in the USA to tight tolerances
• Specially formulated aluminum alloy per Vortex specifications
• Saber tooth groove design — unique tooth profile engineered to increase sprocket longevity
• Color anodized finish — black anodizing with contrasting silver machine-cut highlights
• Vortex patented sprocket design unlike any other on the market

Vortex CAT5 sprockets are the preferred choice of racing teams and performance riders worldwide, offering a proven upgrade over stock sprockets in both weight savings and visual appeal.