Vortex 920ZK-39 Aluminum Rear Sprocket 39T Black 920 Pitch

The Vortex 920ZK-39 is a 39-tooth aluminum rear sprocket designed for 920 pitch chain applications. Machined from a specially formulated aerospace-grade aluminum alloy to Vortex's exacting specifications, this sprocket delivers a significant weight reduction over standard OEM steel sprockets, reducing rotating mass for improved throttle response and acceleration.

Key Features:

• 39-Tooth rear sprocket for precise gearing tuning
• 920 pitch chain compatibility
• Black anodized finish for corrosion resistance and long-lasting appearance
• CNC-machined from high-strength aerospace-grade aluminum alloy
• Engineered to maximize strength while minimizing weight compared to OEM steel sprockets
• Saber tooth groove design for increased sprocket longevity and chain engagement
• Made in the USA by Vortex Racing

Vortex Racing is a trusted name in motorcycle drivetrain components, supplying the same quality sprockets used on professional-level race bikes. The 920ZK-39 is an ideal upgrade for riders looking to fine-tune their gearing or replace a worn sprocket with a lightweight, high-performance alternative.