DIRT BIKE HYDRAULIC BRAKE EXPERT NEEDED (REAR BRAKE SYSTEM)?
the two the solutions above me are perfect. a sprint tip to make the cylinder circulate lower back less difficult is to take a small nylon bristle brush (like an previous toothbrush) squeeze the brake lever (or pedal reckoning on what end you're engaged on) and pump the cylinder out somewhat. Use some new brake fluid on that brush and supply it a powerful scrubbing. Rotate the cylinder little by potential of little scrubbing each and each of how till this is sparkling, that way you ought to no longer be cramming airborne dirt and dust and airborne dirt and dust into the seals once you push it lower back to make room for the hot brake pads.
Thats not a caliper.The caliper is what is on the rotor which is on the wheel. What you need is a master cylinder. I can tell you the master cylinder in that picture is the wrong one. There are generally two types of pitbike rear master cylinders. The one in that picture and the other type.the type you need. You can try giving omicron motors a call. They have the type you need.same kind goes on their Thumpstars