Vortex 404ZL-39 Z-Steel Rear Sprocket 39 Tooth 520 Pitch

The Vortex 404ZL-39 is a high-performance rear sprocket engineered for serious riders who demand durability and precision. Constructed from case-hardened steel, this sprocket features Vortex's Z-Steel technology that provides exceptional wear resistance and extends service life compared to standard steel sprockets.

Key Features:

• 39-tooth configuration for optimized gearing performance
• 520 pitch chain compatible
• Case-hardened steel construction for maximum durability
• CNC-machined for precise tolerances and smooth operation
• Self-cleaning mud grooves prevent debris buildup
• Zinc-plated finish for corrosion resistance
• Lightening holes reduce rotating mass without sacrificing strength

Vortex sprockets are manufactured to exacting specifications and are a direct replacement for OEM sprockets. The 39-tooth count provides a balanced blend of acceleration and top-end speed, making this an excellent choice for sport riding and track applications. Each sprocket undergoes rigorous quality control testing to ensure perfect fitment and long-lasting performance.