Vortex 150ZK-55 Z-Series 520 Rear Sprocket 55-Tooth Aluminum

The Vortex 150ZK-55 is a high-performance Z-Series rear sprocket featuring a 55-tooth count machined from lightweight, durable aluminum alloy. Designed for motorcycles running a 520-pitch chain, this sprocket delivers the precision engineering and tight tolerances that Vortex is renowned for in both racing and street performance applications.

Key Features:

• 55-Tooth Count — Ideal for modified gear ratios targeting improved acceleration and low-end torque
• 520-Pitch Chain Compatibility — Designed for use with standard 520 drive chains
• Z-Series Aluminum Construction — CNC-machined from 7075 aluminum alloy for an optimal balance of strength and reduced unsprung weight
• Hard-Anodized Finish — Provides corrosion resistance and extended wear life
• Precision CNC Machining — Ensures accurate tooth profile for smooth, reliable chain engagement
• Direct OEM Replacement Fit — Engineered to match OEM sprocket mounting specifications for straightforward installation

Vortex sprockets are a trusted choice among racers and performance riders worldwide. The 150ZK-55 rear sprocket is a direct-fit upgrade that enhances drivetrain efficiency without adding unnecessary weight, making it an excellent choice for both track days and spirited street riding.