Vortex 245AZK-40 CAT5 Rear Aluminum Sprocket 40-Tooth Black Anodized

The Vortex 245AZK-40 is a CAT5 series rear aluminum sprocket featuring a 40-tooth count and a striking black anodized finish with contrasting silver machined highlights. 100% CNC manufactured in the U.S.A., this sprocket is built to meet the exacting demands of motorcycle road racing and performance street riding.

Key Features:

• Lightweight CAT5 aluminum construction reduces rotating mass for improved throttle response and acceleration
• 100% CNC machined in the U.S.A. from a specially formulated alloy per Vortex specifications
• Saber tooth groove design — Vortex's patented unique tooth profile extends sprocket service life
• Black anodized finish with contrasting silver machine cuts on sweeps, mud grooves, and body panels
• 40-tooth rear sprocket for tuning final drive gearing to your track or riding application
• Vortex patented sprocket design unlike any standard OEM sprocket

Vortex Racing rear aluminum sprockets are a top choice among racers and performance riders. Their reduced weight lowers rotating mass and helps deliver more power to the rear wheel. The 245AZK-40 is precision-engineered to deliver consistent performance lap after lap.