Vortex 642AZGV4-45 VTX V4 Aluminum Rear Sprocket 45T

The Vortex 642AZGV4-45 is a 45-tooth aluminum rear sprocket built on Vortex's latest V4 sprocket design — an evolution of the iconic CAT5 platform engineered to deliver a 10–15% reduction in weight without sacrificing structural integrity. Featuring machined faces on both sides and an optimized lightening-hole pattern, the V4 represents Vortex's most performance-focused aluminum rear sprocket to date.

Key Features:

• V4 Design: Next-generation pattern focused on optimal structural integrity with machined faces on both sides for a premium two-tone appearance
• Lightweight Aluminum Construction: Significantly reduces rotating mass compared to steel sprockets, improving acceleration response
• CNC Manufactured in the USA: 100% CNC machined to precise tolerances ensuring concentricity and consistent chain engagement
• Specially Formulated Alloy: Built to Vortex's proprietary alloy specifications for durability under race and street conditions
• Anodized Finish: Applied before cutting to protect against corrosion and oxidation while delivering the iconic two-tone machined look
• Unique Tooth Design: Vortex's patented tooth geometry promotes longer sprocket life and smooth chain wear
• 45 Teeth: Allows fine-tuning of gear ratios for improved low-end torque and acceleration

Vortex aluminum sprockets are the preferred choice for road racing, motocross, flat track, and drag racing applications where weight savings are critical. For best results, clean and tension the chain every 300–400 miles when running aluminum sprockets.