Vortex 840ZKV4-40 Aluminum Rear Sprocket 40-Tooth

The Vortex 840ZKV4-40 is a 40-tooth aluminum rear sprocket engineered for performance-oriented riders seeking a lightweight, durable alternative to OEM steel sprockets. Manufactured from high-grade 7000-series aluminum alloy with precision CNC machining, this sprocket delivers excellent strength-to-weight savings without sacrificing longevity.

Key Features:

• 40-Tooth rear sprocket for precise gearing options
• Lightweight aluminum construction — significantly reduces unsprung rotational mass compared to steel
• CNC-machined from high-grade aluminum alloy for tight tolerances and consistent chain engagement
• Hard-anodized finish for enhanced corrosion resistance and surface durability
• Direct OEM-style fitment for straightforward installation
• Part of Vortex's ZKV4 rear sprocket series, designed for street and track use

Vortex is a trusted name in the powersports aftermarket, producing sprockets that meet or exceed OEM specifications. The 840ZKV4-40 is an ideal upgrade for riders looking to fine-tune their final drive ratio or replace a worn rear sprocket with a high-quality component.