I think it'd be the Z125 since it accelerates better but this seems to be a pretty short race. Think the Grom has a higher top speed so maybe it'll win on the highway.

 

Here's the photo at the finish line

 

Hey that's my video! Haha, that's me on the Z125 in front of the office after work. This is not a true test, just a little fun we were having. Full REAL test coming soon!

 

Did the grom rider have bricks in his backpack or is it a parachute? Just saying,weight makes a big difference on theses little scoots. I've owned both and felt the grom was a little faster right out of the box but the z125 just flat out looks better to me win or lose. In this case it's a "win" "win".