Review on Upgrade Your KAWASAKI Ninja 400 with ISTUNT Motorcycle Slip on Half Exhaust System Muffler Pipe: Full Glossy Black 2018-2021 by Sean Bond

Nice exhaust for $100. My only complaint is that the exhaust wobbles a bit when fully on the bike because the springs that attach it to the pipe are too long so there is still quite a bit of play in it. It definitely won't fall and probably won't move, but only a little after riding. But for $100 if you can find better springs this is a very good exhaust, much breathier than stock. Also, the bike mount bolt was too short, so I just used the original bolt and nut and they fit perfectly.