Vortex 817ZK-38 Steel Rear Sprocket Chain Pitch Sprockets - 38T 520

The Vortex 817ZK-38 is a 38-tooth steel rear sprocket designed as a direct-fit replacement or performance upgrade for compatible motorcycles. Part of Vortex's trusted 817ZK series, this sprocket is engineered to deliver reliable power transfer and long service life under demanding street and track conditions.

Key Features:

• 38 Teeth — precise tooth count for optimized gearing ratios
• Steel construction — superior durability and wear resistance compared to aluminum alternatives
• 520 chain pitch compatibility — fits standard 520-series drive chains
• CNC-machined for tight tolerances and consistent fitment
• Black zinc finish for corrosion resistance and clean appearance
• Direct OEM-style bolt pattern for straightforward installation

The Vortex 817ZK-38 rear sprocket is an ideal choice for riders seeking a durable, precision-made steel sprocket that maintains stock gearing feel or serves as part of a 520 conversion or re-gearing project.