Vortex 801AZK-42 Aluminum Rear Sprocket 42T Black Anodized

The Vortex 801AZK-42 is a lightweight 42-tooth aluminum rear sprocket finished in a black anodized coating. CNC-machined in the USA from a specially formulated aluminum alloy to Vortex's exacting specifications, this sprocket delivers a superior combination of low rotating mass and long service life on the street or track.

Vortex's patented tooth geometry is engineered to reduce chain wear and extend sprocket longevity beyond what conventional sprocket designs allow. The black anodized finish bonds to the aluminum surface to resist corrosion and maintain appearance over time.

Key Features:

• 42-tooth rear sprocket for precise gear ratio tuning
• 100% CNC-manufactured in the USA from aerospace-grade aluminum alloy
• Lightweight construction reduces rotating mass for improved acceleration and response
• Vortex patented tooth design for extended sprocket and chain life
• Black anodized finish for corrosion resistance and clean appearance
• Drop-in replacement for OEM sprocket — no modifications required

Vortex Racing has manufactured high-performance motorcycle drivetrain components for Motocross, Supercross, Road Racing, and Flat Track applications for over 15 years. The 801AZK-42 is a direct-fit upgrade over stock gearing, offering a weight savings that translates to real-world performance gains.