Vortex 642AS-45 Steel Rear Sprocket 520 Pitch 45 Tooth

The Vortex 642AS-45 is a high-performance steel rear sprocket designed for riders who demand maximum durability and longevity from their drivetrain components. Engineered specifically for 2015 and newer Yamaha R1 models, this 520-pitch sprocket features 45 teeth and is constructed from premium carbon steel for exceptional strength and wear resistance.

Key Features:

• Laser-cut from high-quality carbon steel for superior durability
• 520 pitch design compatible with modern sportbike chains
• 45-tooth configuration for optimal gearing
• Satin black finish provides excellent corrosion resistance
• Weight-saving cutouts reduce rotational mass without sacrificing strength
• Precision machined to Vortex's exacting specifications
• Outlasts aluminum sprockets in high-stress applications

Vortex steel sprockets are the ideal choice for street riders, track day enthusiasts, and racers who prioritize longevity and reliability. The carbon steel construction delivers significantly longer service life compared to aluminum alternatives, while the laser-cutting process ensures perfect tooth profiles for smooth, quiet operation and optimal chain engagement. The signature Vortex design features strategic material removal to minimize weight while maintaining structural integrity where it matters most.