The Honda PCX / Forza / ADV150 / SH Forums

Hello guys, just joined the forum, i was curious to know if the Forza 125 can fit a Forza 300 engine...

Just got a Forza 125 2018 that the previous owner left without a drop of oil.......... and i found a 300 engine for very cheap.

I know maybe is not gonna be plug and play, but can anyone share a bit of experience about it?

I know they share the same chassis, but are the mounts the same? Do they use the same ECU? I know one has idle stop, and the other has traction control, so I'm pretty sure I'm gonna need a 300 ECU.

Thank you guys!

interesting idea but sounds like it will cost a whole bunch of money to make it work.

Brakes &tires would be all wrong

with enough welding anything can work

But can you legally ride it and get insurance.

Getting the right length belt might be a bit complicated

What country are you in?

UK no way, Thailand, anything goes

I think it's been done in the UK - done be people who have 125s and then steal a 300. Apparently it's much easier than you think.

I don't doubt it can be done but is the result legal to ride in your country ?

People put bigger engines in 49cc bikes all the time but I doubt if they are legally allowed on the road

No, of course they are not legal but what are the chances of being caught in London? You would need a police officer who knows what to look for, even less chance of being caught.