Vortex 920AZR-42 VTX Aluminum Rear Sprocket Anodized Sprockets - 520 42-Tooth

The Vortex 920AZR-42 is a 42-tooth, 520-pitch billet aluminum rear sprocket from Vortex Racing's VTX series, purpose-built for performance street and track riding. Machined from 7075-T6 aerospace-grade aluminum to exacting tolerances, this sprocket delivers a significant weight reduction over OEM steel units, reducing rotating mass for sharper throttle response and improved acceleration.

Key Features:

• 7075-T6 billet aluminum construction — aerospace-grade alloy per Vortex specifications for optimal strength-to-weight ratio
• 100% CNC manufactured in the USA — precision machined to the tightest tolerances in the industry
• Anodized finish — hard anodize treatment bonds to the aluminum surface to resist corrosion and reduce friction
• 42 teeth / 520 pitch — direct fitment for 520-chain applications
• Unique patented tooth design — engineered for increased sprocket longevity and smooth chain engagement
• Reduced rotating mass — lighter than OEM steel sprockets for improved acceleration, deceleration, and directional response

Vortex Racing has been manufacturing top-quality motorcycle racing components in the USA for over 15 years, trusted by professional race teams worldwide. The 920AZR-42 is a direct upgrade for riders looking to reduce unsprung weight and sharpen drivetrain performance on 520-chain-equipped motorcycles.