Vortex 840AKV4-42 Aluminum Rear Sprocket 42-Tooth

The Vortex 840AKV4-42 is a 42-tooth aluminum rear sprocket designed as a high-performance replacement for compatible motorcycles and powersports applications. Engineered by Vortex Racing, a trusted name in aftermarket drivetrain components, this sprocket delivers an ideal balance of lightweight construction and durable performance.

Key Features:

• 42-Tooth Configuration – Optimized gearing for acceleration and power delivery across a range of riding conditions
• Lightweight Aluminum Construction – Significantly reduces unsprung and rotating mass compared to steel sprockets, improving throttle response
• AKV4 Series Design – Vortex's precision-machined aluminum carrier series, built to tight tolerances for consistent chain engagement
• Hard-Anodized Finish – Corrosion-resistant anodized coating extends sprocket life and maintains appearance
• Direct OEM Replacement Fit – Designed to install using the factory mounting hardware and chain alignment
• 840 Chain Pitch Compatibility – Matched to the correct chain specification for the intended application

Vortex sprockets are a popular upgrade for street, track, and sport riding enthusiasts seeking to fine-tune their gearing without adding unnecessary weight. The 840AKV4-42 is a direct bolt-on component that requires no modification for compatible fitments.