Vortex 642AKV4-43 V4 Aluminum Rear Sprocket 43-Tooth Black Anodized

The Vortex 642AKV4-43 is a 43-tooth aluminum rear sprocket featuring Vortex's next-generation V4 design — a performance-focused evolution of their iconic CAT5 sprocket. Finished in a striking black anodized coating, this sprocket delivers a significant weight reduction over traditional steel sprockets without compromising structural integrity.

Key Features:

• V4 Design: Vortex's latest sprocket pattern offers a 10–15% reduction in weight compared to the previous CAT5 design, with machined faces on both sides for maximum precision
• 7075 T6 Billet Aluminum: Lightweight, high-strength alloy construction reduces rotating mass for improved throttle response, acceleration, deceleration, and directional changes
• 100% CNC Manufactured in the USA: Machined to the tightest tolerances for an unrivaled fit and finish
• Black Anodized Finish: Hard anodized coating provides corrosion resistance and a durable, aggressive appearance
• Patented Tooth Design: Vortex's unique tooth geometry increases sprocket longevity and chain engagement
• 43 Teeth: Allows for precise gear ratio tuning to optimize acceleration or top speed

Vortex aluminum sprockets are the preferred choice for road racing, motocross, flat track, and drag racing applications where every pound of rotating mass matters. For best results, chain and sprocket cleanliness and tension should be maintained every 300–400 miles. Pair with a matching-pitch front sprocket and chain for a complete drivetrain upgrade.