The quick answer is no: You don't need to bleed your brakes if you change your brake pads properly. However, there are some good reasons why you should. Let's start with the concept of brake bleeding ...

The Actron brake bleeder is the best way to bleed motorcycle brakes that we have found so far. It’s a bit tricky to use, but once you figure out how to get the hose to fit the bleed nipple, it works ...