Marketing Color: Natural Material: Steel Sprocket Position: Front Sprocket Size: 520 Sprocket Teeth: 15 Drilled lightening holes reduce rotating mass. High carbon steel for maximum strength. Special Vortex Nichel plating to resist corrosion. Induction hardened to reduce surface wear. Precise tolerances to ensure concentricity. This item fits the following vehicle applications: compatible with Yamaha YZF-R6 2006-2020