Vortex 144AZUV4-42 VTX Aluminum Rear Sprocket 42T

The Vortex 144AZUV4-42 is a high-performance aluminum rear sprocket from Vortex Racing's VTX series, engineered for riders who demand precision, durability, and reduced unsprung weight. Manufactured from high-grade 7075 aluminum alloy with hard anodizing, this sprocket offers an excellent strength-to-weight ratio compared to standard steel sprockets.

Key Features:

• 42-Tooth configuration for optimized final drive gearing
• 7075 aluminum construction — lightweight yet highly durable
• Hard anodized finish for corrosion resistance and extended service life
• CNC machined to tight tolerances for precise chain engagement and smooth power delivery
• VTX series design with aggressive cutouts to minimize weight without sacrificing strength
• Compatible with standard 520 or 525 chain pitch depending on fitment application

Vortex sprockets are a trusted choice among sport bike enthusiasts and track day riders. The 144AZUV4-42 is a direct bolt-on replacement that delivers consistent performance under demanding riding conditions. Always replace the chain and front sprocket together for maximum drivetrain longevity.