Vortex 839AZKV4-42 Aluminum Rear Sprocket 42-Tooth

The Vortex 839AZKV4-42 is a lightweight aluminum rear sprocket featuring a 42-tooth count, engineered for performance motorcycle applications. Manufactured to Vortex's exacting racing standards, this sprocket is 100% CNC machined in the USA from a specially formulated aluminum alloy developed to Vortex's own specifications.

Key Features:

• 42-Tooth rear sprocket for precise gear ratio tuning
• 100% CNC manufactured in the USA for consistent quality and tight tolerances
• Lightweight aluminum construction reduces rotating mass for improved acceleration and throttle response
• Silver anodized finish helps prevent corrosion and enhances durability
• Unique Vortex patented tooth design engineered to increase sprocket longevity
• Specially formulated alloy per Vortex specifications for optimal strength-to-weight ratio

Vortex Racing sprockets are trusted by professional race teams worldwide across Motocross, Supercross, Road Racing, and Flat Track disciplines. Replacing a heavy OEM steel sprocket with this aluminum unit reduces unsprung and rotating weight, contributing to quicker acceleration, improved deceleration response, and more precise directional changes.