Vortex 642AZOV4-45 VTX Aluminum Rear Sprocket 45T

The Vortex 642AZOV4-45 is a 45-tooth aluminum rear sprocket engineered for performance riders who demand lightweight drivetrain components without sacrificing durability. Precision-machined in the USA from a specially formulated aluminum alloy per Vortex's exacting specifications, this sprocket delivers the reliability and consistency that racers and enthusiasts trust on both the track and street.

Key Features:

• Lightweight aluminum construction — reduces rotating mass for improved throttle response and acceleration
• 100% CNC manufactured in the USA — ensures precise concentricity and consistent fit
• Specially formulated aluminum alloy — developed to Vortex's proprietary specifications for optimal strength-to-weight ratio
• Anodized finish — resists corrosion and wear for extended service life
• Unique Vortex patented tooth profile — engineered to increase sprocket longevity and improve chain engagement
• Lightening holes — strategically placed to minimize unsprung rotating weight
• 45 teeth — direct replacement tooth count for stock gearing or performance tuning

The Vortex VTX aluminum rear sprocket line is a favorite among club racers and track-day riders looking to shed grams from their drivetrain. The anodized aluminum construction keeps weight low while the precision CNC machining ensures smooth, reliable power transfer mile after mile. This is a direct-fit replacement sprocket — no modifications required for installation.