Vortex 840CZBV4-42 VTX Aluminum Rear Sprocket 42-Tooth

The Vortex 840CZBV4-42 is a high-performance aluminum rear sprocket from Vortex Racing, designed as a lightweight, durable replacement or upgrade sprocket for compatible motorcycles. Engineered to exacting tolerances, this sprocket delivers reliable power transfer and is a popular choice for both street and track riders looking to optimize their drivetrain performance.

Key Features:

• 42-Tooth count for optimized acceleration and gear ratio tuning
• CNC-machined aluminum construction for reduced unsprung weight compared to steel sprockets
• VTX series design featuring precision-cut teeth for smooth chain engagement and extended wear life
• Hard anodized finish resists corrosion and wear for long-lasting performance
• Drilled and lightened design reduces rotating mass for improved throttle response
• Compatible with standard 520 or 525 chain pitch (verify application-specific fitment)
• Direct bolt-on replacement — no modifications required for compatible models

Vortex Racing is a trusted name in the powersports industry, known for producing competition-grade sprockets, clip-ons, and drivetrain components. The 840CZBV4-42 rear sprocket is a straightforward upgrade for riders seeking weight savings and precise power delivery from their drivetrain.