I have a LEXMOTO urban, 125cc with a gy6 clone engine. I'm going to be replacing it as my daily ride within a month or two with a reliable honda of some sort.

My question is, if I provide some photographs and measurements, can anybody point me in the right direction of which 150-200cc motor to put in as a replacement? I won't be riding it on the road with the upgrade until I pass my full license as I'm restricted to 125cc due to only having a CBT.

The bike is an EFI model using a Delphi MT05 ECU, I'm wondering if I'd be able to remap this (I have the tools to edit the files but I have never tuned a fuel injected bike before) or whether I can bypass all the fuel injection stuff in favour of a carb.

The current motor is listed as "1P52QMI" engine code on the Lexmoto website and has an output of 8.7hp and a max speed of 56MPH.

Any help is greatly appreciated!