Ninja 300 Dirtbike?!Watch this stock Kawasaki Ninja 300 take on a motocross track. Harry McKenzieFri, 7 Jun 2019 I can't quite believe what I'm seeing here. Pro rider Joey Mac takes a stock Ninja 300 off-piste, literally. And somehow the bike holds up just fine. Good to know, right? View this post on Instagram A post shared by Joey Mac (@therealjoeymac) on Jan 11, 2019 at 10:37am PST kawasakioffroad