Vortex V4AH V4 Aluminum Hardcoat Rear Sprocket

The Vortex V4AH is a V4-series aluminum rear sprocket featuring Vortex Racing's advanced hardcoat (PTFE) anodized finish. Part of the next evolution in Vortex's aluminum sprocket platform, the V4 design delivers measurable weight savings over the legendary CAT5 while maintaining race-proven strength and durability.

Key Features:

• 10–15% lighter than the CAT5 design — achieved through a new cutout pattern engineered for optimal structural integrity
• Hardcoat (PTFE) anodized finish — lower coefficient of friction than raw aluminum, plus enhanced wear and heat resistance for longer service life and reduced drivetrain friction loss
• Machined faces on both sides for the iconic two-tone Vortex look and precise chain engagement
• 100% CNC manufactured in the USA from specially formulated aerospace-grade aluminum alloy
• Vortex patented tooth design for increased sprocket longevity and smooth power transfer
• Available in multiple tooth counts to optimize gear ratios for acceleration or top-end speed

The V4AH is an ideal upgrade for road racing, track days, and high-performance street applications where rotational weight savings translate directly into throttle response and rear-wheel power. Proper chain maintenance every 300–400 miles is recommended to maximize the lifespan of aluminum sprockets.