ESJOT aluminum sprockets are specifically designed for the harsh operating conditions in motocross, enduro and road area. Compared to conventional steel sprockets a ESJOT sprocket brings a weight saving of over 60%. The use of very high-quality aluminum (7075 T6), which is also used in the aerospace, and the extremely low manufacturing tolerances guarantee an extremely long life. All ESJOT aluminum sprockets are anodized color. - About 60% lighter than a conventional steel sprocket. - Manufactured on precision CNC machines - Plan and concentricity of less than 0.1 mm - Made of high quality and high strength 7075 T6 aluminum - Special surface treatment - 100% Made in Germany - OEM quality