Vortex 255AZK-47 Black 47-Tooth 520-Pitch Aluminum Rear Sprocket

The Vortex 255AZK-47 is a 47-tooth, 520-pitch aluminum rear sprocket finished in an anodized black with contrasting silver machined accents. Engineered by Vortex Racing — a U.S.-based manufacturer trusted by professional race teams worldwide — this sprocket delivers a winning combination of lightweight performance and long-term durability.

Key Features:

• 47 teeth, 520 chain pitch — direct-fit replacement or performance upgrade
• Anodized black finish with contrasting silver machined highlights for a clean, aggressive look
• Lightweight aluminum construction reduces rotating mass for improved throttle response and acceleration
• 100% CNC manufactured in the USA to the tightest tolerances
• Specially formulated aluminum alloy per Vortex Racing specifications for optimal strength-to-weight ratio
• Vortex patented unique tooth design increases sprocket longevity and chain life
• Anodized finish helps prevent corrosion and wear

Vortex Racing has spent decades refining their sprocket designs with direct feedback from top-level professional race teams. The result is a sprocket that performs at the highest level on both the track and the street, making the 255AZK-47 an ideal choice for riders seeking a lightweight, high-quality rear sprocket upgrade.