upgrading 50 to 70

[coachhejl]

Does this typically just need a carb re-tune? Or do you have to up-jet the carb?

Or a whole new one?

Anything else have to be done?

Thanks

[milly]

Have a look at Brent's videos on this. Here's a sample link of his does 2 stroke as well.
youtu.be/PoK6ofGjeZA

[aeroxbud]

There are so many variables it's hard to say for sure. And two strokes are very different to four strokes.
It will depend on what cylinder kit you choose as well.

[captincvmn]

I’ve gone from 50-70cc 2t and just up jetted but it honestly ran better once I up carbed.