Vortex 642CZRV4-43 V4 Aluminum Rear Sprocket 43-Tooth

The Vortex 642CZRV4-43 is a lightweight aluminum rear sprocket featuring Vortex's next-generation V4 design, purpose-built for riders who demand the absolute best in drivetrain performance. This 43-tooth sprocket is engineered for aftermarket wheel fitments and delivers a measurable weight advantage over both the classic CAT5 design and OEM steel sprockets.

The V4 platform represents a significant evolution in Vortex sprocket engineering. By refining the spoke pattern for optimal structural integrity and adding machined faces on both sides, Vortex achieved a 10–15% reduction in weight compared to the CAT5 without sacrificing strength or durability. Less rotating mass translates directly to improved throttle response and drivetrain efficiency.

Key Features:

• V4 design — 10–15% lighter than the CAT5 with no reduction in strength
• Lightweight aluminum construction — significantly reduces rotating mass vs. steel
• 100% CNC manufactured in the USA to the tightest tolerances
• Specially formulated aluminum alloy per Vortex specifications
• Silver anodized finish applied before cutting for iconic two-tone machined appearance and corrosion resistance
• Vortex patented tooth design increases sprocket longevity and reduces drivetrain friction
• 43-tooth rear sprocket for precise gearing tuning
• Designed for compatible aftermarket wheel fitments

Vortex Racing has been manufacturing top-quality motorcycle racing components in the USA for decades, with parts tested on-track by professional race teams worldwide. The 642CZRV4-43 is the ideal upgrade for performance-focused riders looking to shed drivetrain weight and sharpen throttle response.