Vortex 337-42 Steel Rear Sprocket Pitch Sprockets - 42T 520 Black

The Vortex 337-42 is a 42-tooth, 520-pitch steel rear sprocket engineered for sport bikes and performance motorcycles. Built to exacting tolerances, this sprocket delivers reliable power transfer and long service life for both street and track applications.

Key Features:

• Steel construction — manufactured from high-quality carbon steel for exceptional strength and durability
• Electro-plated satin black finish — corrosion-resistant coating for long-lasting appearance and protection
• 42 teeth / 520 pitch — precise tooth count and chain pitch for accurate fitment and smooth power delivery
• Unique tooth profile — Vortex's proprietary tooth design promotes extended sprocket life and consistent chain engagement
• Lightening holes — strategically placed to reduce rotating mass without sacrificing structural integrity
• Precision CNC machined — manufactured to tight tolerances ensuring concentricity and quiet, vibration-free operation
• Hardened teeth — induction-hardened for superior wear resistance under demanding riding conditions

Vortex Racing has been a trusted name in high-performance motorcycle drivetrain components since 1995, with products proven at the highest levels of AMA Superbike and motocross competition. The 337-42 rear sprocket is a direct drop-in replacement that maintains OEM gearing or serves as part of a custom sprocket-and-chain upgrade.