OMB Warehouse stocks the largest collection of mini bike mechanical disk brakes that are perfect for all makes and models of various types of mini bikes.Unlike thehydraulically driven disk brakes, mechanical disk brake for mini bike gets their power from a cable that is actuated by a common brake lever. The cable pulls on a small moveable part on the caliper which pushes the brake pads into contact with the rotor. This creates friction, which slows down the wheel. Our best mechanical disc brakes provide reliable, relatively hassle-free performance at a very competitive price. The top selling mini bike mechanical disk brakes in our inventory is the Mini Bike Disc Brake Caliper MBX10 MBX11 MM-B80. The Universal Disc Brake Caliper has mounting holes 50mm on center and is tapped for 6mm thread. Will accommodate a brake rotor width of 3mm. Built-in conduit retainer will accept cables with a 5.5mm conduit or outer casing. Includes inner cable securing bolt/nut for brake arm. You can also buy the disk only which has a 6" diameter, 1" bore, and is 1/8" thick. Check out our Rebuild Kit for Manco Disc Brake Caliper that includes (2) friction pads, (1) load shoe, (1) adjusting screw, (1) adjusting nut & (1) plunger.