Vortex 840ZKV4-44 VTX Aluminum Rear Sprocket Sprockets - 44T

The Vortex 840ZKV4-44 VTX Aluminum Rear Sprocket is a high-performance replacement rear sprocket engineered for serious riders who demand precision, durability, and reduced unsprung weight. Vortex Racing is a trusted name in the powersports industry, known for producing competition-grade drivetrain components used on both the street and track.

This sprocket is manufactured from high-grade 7075-T6 aluminum, offering an excellent strength-to-weight ratio that helps reduce rotating mass and improve throttle response compared to heavier steel alternatives. The hard-anodized finish provides enhanced corrosion resistance and surface hardness for extended service life.

Key Features:

• 44-tooth rear sprocket configuration
• Constructed from lightweight, high-strength 7075-T6 aluminum
• Hard-anodized surface finish for durability and corrosion resistance
• CNC-machined for precise tooth geometry and consistent chain engagement
• Designed to work with 520-pitch chain (verify chain pitch with MPN suffix)
• Direct bolt-on replacement — no modifications required
• Reduces unsprung and rotating weight for improved performance

Vortex sprockets are a popular upgrade for street sport bikes, track day machines, and club racers looking to fine-tune their final drive ratio. Pairing this sprocket with a matching Vortex front sprocket and a quality chain ensures optimal drivetrain performance and longevity.