Vortex 170V4-51 VTX Aluminum Rear Sprocket 51T

The Vortex 170V4-51 is a 51-tooth VTX series aluminum rear sprocket precision CNC-machined from lightweight 7075-T6 aluminum. Designed as a direct OEM replacement or performance upgrade, this sprocket delivers exceptional strength-to-weight savings over stock steel sprockets while maintaining the durability demanded by street and sport riding applications.

Vortex's VTX sprockets feature a hard-anodized finish for enhanced corrosion resistance and long service life. The precision tooth profile ensures smooth, consistent chain engagement and reduced drivetrain wear, making this an ideal choice for riders looking to fine-tune their gearing or replace a worn rear sprocket with a quality aftermarket component.

Key Features:

• 51-tooth rear sprocket for gearing customization
• CNC-machined from 7075-T6 aluminum for superior strength and reduced weight
• Hard-anodized finish for corrosion resistance and durability
• Precision tooth geometry for smooth chain engagement and reduced wear
• Direct bolt-on replacement — no modifications required
• Compatible with standard O-ring, X-ring, and Z-ring chains

Vortex Racing is a trusted name in the powersports industry, known for high-tolerance manufacturing and consistent quality across their sprocket lineup. The 170V4-51 is part number 170V4-51 in the Vortex catalog.