Vortex 338ZB-39 Aluminum Rear Sprocket 39 Tooth 520 Pitch

The Vortex 338ZB-39 is a high-performance aluminum rear sprocket designed for serious riders who demand optimal power transfer and reduced rotational mass. This 39-tooth sprocket features a 520 pitch pattern and is manufactured from aerospace-grade aluminum alloy to Vortex's exacting specifications.

Key Features:

• 100% CNC machined in the USA for precision and concentricity
• 39 teeth with 520 pitch chain compatibility
• Specially formulated aluminum alloy construction for lightweight performance
• Black anodized finish prevents corrosion and provides distinctive appearance
• Vortex patented tooth design increases sprocket longevity
• Significantly reduces rotational mass compared to steel sprockets
• Designed for both racing and high-performance street applications

Vortex Racing sprockets are trusted by professional racers and track enthusiasts worldwide for their superior craftsmanship and durability. The unique tooth profile provides extended wear life while maintaining optimal chain engagement. This sprocket allows riders to fine-tune gear ratios for improved acceleration characteristics and overall performance.