Vortex 170ZKV4-51 VTX Aluminum Rear Sprocket 51T

The Vortex 170ZKV4-51 is a lightweight VTX series aluminum rear sprocket featuring 51 teeth, engineered for performance motorcycle applications. Vortex sprockets are CNC-machined from high-strength 7075-T6 aluminum alloy, delivering an excellent strength-to-weight ratio over stock steel sprockets while maintaining durability under demanding riding conditions.

Key Features:

• 51-tooth rear sprocket for increased low-end torque and acceleration
• CNC-machined from 7075-T6 aluminum alloy for maximum strength and minimal weight
• Hard anodized finish for corrosion resistance and extended wear life
• Precision laser-cut tooth profiles for smooth, consistent chain engagement
• Direct OEM-style fitment — no modifications required
• Part of Vortex's VTX series sprocket lineup

Vortex is a trusted name in motorcycle performance components, and the VTX aluminum rear sprocket line is a popular upgrade for riders looking to fine-tune their gearing for track or street use. The 51-tooth configuration provides a lower final drive ratio compared to smaller tooth counts, improving off-the-line acceleration and low-speed response.