Vortex 817ZR-37 Steel Rear Sprocket 37T

The Vortex 817ZR-37 is a 37-tooth steel rear sprocket from Vortex Racing, a trusted name in precision-machined drivetrain components for sportbikes and street motorcycles. Designed as a direct OEM replacement or performance upgrade, this sprocket delivers reliable power transfer and long-lasting durability under demanding riding conditions.

The 817ZR series features a zinc-coated steel construction, offering excellent corrosion resistance while maintaining the strength and longevity required for high-performance street and track use. The precise tooth profile ensures smooth chain engagement and reduced wear on both the sprocket and chain.

Key Features:

• 37 teeth for optimized gear ratio performance
• Zinc-coated steel construction for superior corrosion resistance and durability
• Precision CNC machined for accurate fit and consistent chain engagement
• Direct bolt-on replacement — no modifications required
• Compatible with standard chain pitches for the application
• Manufactured to tight tolerances for balanced, vibration-free operation

Vortex sprockets are renowned in the motorsports community for their quality and value. The 817ZR-37 is an ideal choice for riders seeking a reliable, long-lasting rear sprocket that performs consistently on the street or track.