Vortex 610ZB-39 520 Black Aluminum Rear Sprocket 39 Tooth

The Vortex 610ZB-39 is a 39-tooth, 520-pitch black anodized aluminum rear sprocket designed for high-performance sportbike applications. Engineered to Vortex Racing's exacting standards, this sprocket delivers a compelling combination of reduced unsprung weight and durable, long-lasting performance for both street and track riding.

Key Features:

• 39-Tooth Configuration – Optimized tooth count for a balance of acceleration and top-end performance
• 520 Chain Pitch – Compatible with standard 520-series drive chains
• Black Anodized Aluminum Construction – Hard anodized finish provides corrosion resistance and a clean, aggressive aesthetic while shedding significant weight compared to steel
• Precision CNC Machined – Manufactured to the tightest tolerances for smooth, consistent chain engagement and reduced drivetrain wear
• 610 Carrier Pattern – Engineered to fit specific sportbike hub bolt patterns; verify fitment before ordering
• Race-Proven Design – Vortex sprockets are tested and trusted by professional racers in AMA Superbike, Supercross, and motocross competition

Vortex Racing has been producing championship-level motorcycle components since 1995. The 610ZB-39 rear sprocket is a direct upgrade over factory sprockets, offering lighter weight and the performance consistency demanded by serious riders on street and circuit alike.