Vortex 170V4-39 VTX Aluminum Rear Sprocket 39-Tooth

The Vortex 170V4-39 is a high-performance aluminum rear sprocket from Vortex Racing's VTX series, engineered for competitive and street riders who demand precision, strength, and reduced rotating mass. Machined from high-grade 7075-T6 aluminum alloy, this sprocket delivers an excellent strength-to-weight ratio compared to standard steel sprockets, helping to improve throttle response and overall drivetrain performance.

Key Features:

• 39-Tooth rear sprocket for optimized gear ratio tuning
• CNC-machined from lightweight, high-strength 7075-T6 aluminum
• Part of the Vortex VTX series — designed for street and track applications
• Hard-anodized finish for enhanced corrosion resistance and durability
• Precision-cut teeth for smooth, consistent chain engagement
• Reduced unsprung and rotating weight for improved acceleration response
• Manufactured to OEM dimensional tolerances for direct bolt-on fitment

Vortex Racing is a trusted name in the powersports industry, known for producing race-proven drivetrain components. The 170V4-39 rear sprocket is a direct replacement upgrade, offering professional-grade quality at a competitive value. Whether on the track or street, this sprocket is built to perform lap after lap.