Vortex 840CZKV4-45 VTX Aluminum Rear Sprocket 45T

The Vortex 840CZKV4-45 is a high-performance VTX series aluminum rear sprocket featuring 45 teeth, engineered for riders who demand precision, reduced unsprung weight, and maximum durability on the street or track.

Vortex sprockets are CNC-machined from high-grade 7075-T6 aluminum and hard anodized for exceptional wear resistance. The VTX series is designed as a direct OEM replacement with a bolt-on fitment, eliminating the need for modifications during installation.

Key Features:

• 45-tooth rear sprocket for precise gearing tuning
• CNC-machined from lightweight 7075-T6 aluminum for reduced unsprung weight
• Hard anodized finish for superior corrosion and wear resistance
• Precision-cut tooth profile for smooth, quiet chain engagement
• Direct OEM replacement — bolt-on installation, no modifications required
• Manufactured by Vortex Racing, a trusted name in performance motorcycle drivetrain components

Upgrading to a Vortex aluminum rear sprocket is one of the most cost-effective ways to fine-tune your motorcycle's acceleration, top speed, and overall gearing characteristics. The reduced rotational mass of an aluminum sprocket compared to steel also contributes to improved throttle response.