Vortex 119ZK-40 Aluminum Rear Sprocket 40-Tooth Black Anodized

The Vortex 119ZK-40 is a 40-tooth aluminum rear sprocket finished in black anodize, designed for motorcycle applications requiring a lightweight, high-performance chain drive component. Built to Vortex Racing's exacting standards, this sprocket is 100% CNC-machined in the USA from a specially formulated aluminum alloy, delivering the precision and durability demanded by street and track riders alike.

Key Features:

• 40-tooth rear sprocket configuration
• Lightweight aluminum construction reduces rotating mass for improved throttle response
• 100% CNC-manufactured in the USA for precise tolerances
• Specially formulated alloy per Vortex specifications
• Black anodized finish for corrosion resistance and aggressive styling
• Vortex patented unique tooth design extends sprocket longevity
• Bolt pattern code 119 — verify fitment for your specific application

Vortex aluminum rear sprockets are a popular upgrade for riders looking to reduce unsprung and rotating weight while maintaining reliable power transfer. The black anodized finish provides both corrosion protection and a clean, race-inspired appearance. As with all Vortex sprockets, the 119ZK-40 pairs with a compatible front sprocket and chain of matching pitch for optimal drivetrain performance.