Vortex 526AV4-42 Aluminum Rear Sprocket 520 Pitch 42-Tooth

The Vortex 526AV4-42 is a 42-tooth aluminum rear sprocket designed as a high-performance, lightweight upgrade over the stock steel sprocket. CNC-machined in the USA from 7075-T6 billet aluminum, this sprocket delivers an exceptional strength-to-weight ratio while significantly reducing rotating mass for improved throttle response and acceleration.

Key Features:

• 7075-T6 billet aluminum construction — aircraft-grade alloy formulated to Vortex specifications for maximum durability and light weight
• 100% CNC machined in the USA — manufactured to the tightest tolerances for a perfectly concentric sprocket every time
• 520 chain pitch — compatible with standard 520-pitch drive chain applications
• 42-tooth rear sprocket — maintains OEM-equivalent gearing for balanced street and track performance
• Vortex patented tooth design — reduces friction and drag for improved acceleration and deceleration, and extends chain and sprocket life
• Anodized finish — corrosion-resistant anodized coating protects against wear and the elements
• Lightweight design reduces rotating mass, multiplying the effect of weight savings on drive components for better overall performance

The Vortex 526AV4-42 rear sprocket is the standard in the motorcycle racing industry, trusted by professional race teams worldwide. It is a direct-fit replacement that allows riders to upgrade from heavy OEM steel sprockets without sacrificing durability or reliability.