Rim Material G6069 High Strength Double-Aluminum Reinforced G6069 High Strength Double-Aluminum Reinforced. Rim Width 25mm(Outer)/19mm(Inner) 25mm(Outer)/19mm(Inner). Brake 6-Bolt 6" Disc Brake Rotor (preinstalled) 6-Bolt 6" Disc Brake Rotor (preinstalled).