Vortex 454ZK-39 Aluminum Rear Sprocket 39T 525 Pitch Black

The Vortex 454ZK-39 is a 39-tooth aluminum rear sprocket designed for 525-pitch chain applications. Built to race-proven standards, this sprocket delivers a lightweight performance advantage over stock steel units without sacrificing durability.

Key Features:

• 39 teeth for precise gear ratio tuning
• 525 chain pitch compatibility
• Black anodized finish — PTFE hardcoat bonds to the aluminum for increased surface durability and reduced friction
• 7075-T6 billet aluminum construction — lightweight yet strong
• 100% CNC machined to tight tolerances for a precise fit
• Saber tooth groove design — unique tooth profile engineered to extend sprocket longevity
• Designed directly from original motorcycle parts to ensure accurate fitment

Vortex Racing is a U.S.-based manufacturer with over 15 years of experience producing top-quality motorcycle racing components for Road Racing, Motocross, Supercross, Flat Track, and Minibikes. Each component is validated through direct feedback from professional race teams worldwide.