Vortex 526AZKV4-42 CAT5 Aluminum Rear Sprocket 520 Pitch 42T

The Vortex 526AZKV4-42 is a CAT5 series aluminum rear sprocket featuring a 520 chain pitch and 42-tooth count. Designed for performance-minded riders, this sprocket is a direct upgrade over heavy OEM steel units, delivering meaningful reductions in rotating mass for sharper throttle response and improved acceleration.

Key Features:

• 7075-T6 Billet Aluminum Construction — Specially formulated alloy per Vortex specifications for the optimal balance of strength and lightweight performance
• 100% CNC Machined in the USA — Precision manufacturing ensures a perfectly concentric sprocket every time, reducing drivetrain stress and extending chain life
• Anodized Finish — Corrosion-resistant anodizing protects the sprocket surface and provides a clean, polished appearance
• Vortex Patented Tooth Design — Unique tooth geometry reduces friction and drag for improved acceleration and deceleration response
• 520 Chain Pitch — Compatible with standard 520 pitch drive chains
• 42-Tooth Rear Sprocket — Maintains or fine-tunes stock gearing ratios depending on application
• Lightweight Design — Significantly reduces rotating mass compared to OEM steel sprockets, freeing horsepower and improving handling dynamics

Vortex Racing has been manufacturing top-quality motorcycle racing components in the USA for over 15 years, with components trusted by professional race teams worldwide. The 526AZKV4-42 sprocket is built to the tightest tolerances to deliver consistent, race-proven performance on street and track alike.