Vortex 838ZK-40 Steel Rear Sprocket 40T

The Vortex 838ZK-40 is a 40-tooth steel rear sprocket designed as a direct OEM replacement or performance upgrade for compatible sportbikes and motorcycles. Manufactured by Vortex Racing, a trusted name in precision-machined drivetrain components, this sprocket delivers reliable power transfer and long-lasting durability under demanding riding conditions.

Crafted from high-quality steel, the 838ZK-40 offers excellent wear resistance and strength compared to aluminum alternatives, making it an ideal choice for riders seeking extended sprocket life. The sprocket is precision CNC-machined to tight tolerances, ensuring smooth chain engagement and consistent performance mile after mile.

Key Features:

• 40 teeth for optimized gear ratio and acceleration characteristics
• Steel construction for maximum durability and wear resistance
• CNC-machined to precise tolerances for smooth chain engagement
• Direct bolt-on fitment — no modifications required
• Manufactured by Vortex Racing, a leader in motorcycle drivetrain components

The Vortex 838ZK-40 sprocket is a straightforward, high-quality upgrade or replacement that maintains OEM-level fit and function while delivering the quality standards Vortex Racing is known for.