Vortex 170ZG-39 VTX Aluminum Rear Sprocket 39T

The Vortex 170ZG-39 is a 39-tooth VTX series aluminum rear sprocket engineered for performance-oriented riders seeking reduced unsprung weight and precise power delivery. Machined from high-grade 7075-T6 aluminum alloy and finished with a hard anodized coating, this sprocket offers excellent durability while significantly reducing rotational mass compared to stock steel sprockets.

Key Features:

• 39-Tooth Configuration – Optimized gearing for improved acceleration and throttle response
• 7075-T6 Aluminum Construction – Lightweight yet strong material used extensively in racing applications
• Hard Anodized Finish – Resists corrosion and wear for extended service life
• CNC Machined – Precision tolerances ensure smooth chain engagement and consistent performance
• Direct OEM Replacement – Bolt-on fitment with no modifications required
• Vortex VTX Series – Trusted by racers and performance riders worldwide

The Vortex VTX aluminum rear sprocket is a popular upgrade for sport bike and track day enthusiasts looking to fine-tune their gearing setup. The lightweight aluminum construction reduces unsprung and rotational weight, contributing to improved acceleration feel and handling. Compatible with standard 520 or application-specific chain pitch depending on fitment.