Ultralight Rear sprocket-49T/50T/51T/52T for HondaUltralight rear sprockets feature a hard anodized finish and are specifically designed for road and racing applications. They are CNC machined from the same 7075 T4 material as their famous offroad sprockets, yet feature the increased longevity from the hard anodizing process. Hard anodizing is an integral surface coating which significantly increases the hardness and wear resistance of the sprocket surface. Specifications Tooth: 49T 50T 51T 52T Inner