Vortex 775AKV4-42 Aluminum Rear Sprocket 42-Tooth

The Vortex 775AKV4-42 is a 42-tooth aluminum rear sprocket engineered for performance motorcycle applications. Machined from 7075 T6 billet aluminum, it is lightweight for less rotating mass, delivering real, measurable improvements on the street and track.

An aluminum sprocket is much lighter compared to OEM steel sprockets, which leads to reduced rotating mass and allows for improved acceleration and handling.

Key Features:

• 100% CNC manufactured in the USA
• Anodized in color first, then CNC machined from 7075 aluminum to produce a trick colored sprocket with silver highlights
• 42 teeth — allows for tuned final drive gearing
• Proven design trusted by racing champions for its tight tolerances and unique tooth design
• Machined from aerospace-grade alloys, anodized, and engineered to achieve maximum lightness and strength
• Available finish bonds to the aluminum to create a more durable surface with less friction

Vortex Racing is a U.S.-based manufacturer that continues to produce top-quality motorcycle racing components for Motocross, Supercross, Road Racing, Flat Track Racing, and Minibikes. The 775AKV4-42 rear sprocket is a direct-fit performance upgrade over stock steel units.