Vortex 825ZBV4-43 VTX Aluminum Rear Sprocket 43-Tooth V4 Design

The Vortex 825ZBV4-43 is a 43-tooth aluminum rear sprocket built on Vortex's all-new V4 design — a performance evolution of the iconic CAT5 pattern that delivers a 10–15% reduction in weight without sacrificing structural integrity. Machined faces on both sides and an optimized cutout pattern make this one of the lightest and most performance-focused sprockets in the Vortex lineup.

Key Features:

• V4 Design: New-generation sprocket geometry with 10–15% less weight than the classic CAT5, engineered for maximum performance and strength
• 7075-T6 Billet Aluminum: Aerospace-grade alloy machined to tight tolerances, reducing rotating mass for improved throttle response
• 100% CNC Manufactured in the USA: Precision-machined to Vortex's exacting specifications
• PTFE Black Hardcoat Finish: Durable black coating bonds to the aluminum surface to create a harder, lower-friction finish that resists wear and corrosion
• Vortex Patented Tooth Design: Unique tooth geometry engineered to increase sprocket longevity and optimize chain engagement
• 43 Teeth — 825 Wheel Fitment: Sized for specific OEM and aftermarket wheel applications; verify fitment before ordering

Aluminum sprockets are the preferred choice for road racing, track days, and performance riding where weight savings are critical. Note that aluminum sprockets require proper chain maintenance — chain cleaning and tension checks every 300–400 miles are recommended to maximize service life. The Vortex 825ZBV4-43 is the ideal upgrade for riders seeking race-proven performance with a premium USA-made component.