Vortex 775BZK-43 Black 43-Tooth 520-Pitch Aluminum Rear Sprocket

The Vortex 775BZK-43 is a lightweight aluminum rear sprocket featuring a 43-tooth count and 520 pitch chain compatibility, finished in a durable black anodized coating for corrosion resistance and a clean, aggressive look.

Engineered by Vortex Racing in the USA, this sprocket is CNC-machined from a specially formulated aluminum alloy developed to Vortex's exacting standards. The result is a sprocket that delivers an ideal balance of strength, longevity, and weight savings over a stock steel unit — reducing rotating mass and helping transfer more power to the rear wheel.

Key Features:

• 43-tooth, 520-pitch rear sprocket for precise gearing selection
• Black anodized finish for corrosion protection and aesthetics
• 100% CNC manufactured in the USA for consistent quality
• Specially formulated aluminum alloy per Vortex specifications
• Vortex patented unique tooth design increases sprocket longevity
• Lightweight construction reduces rotating mass compared to OEM steel sprockets

The 775BZK-43 is a direct-fit replacement or gearing upgrade for compatible motorcycles running a 520-pitch drivetrain. Always replace the chain and front sprocket together for maximum performance and component life.