250/300 gearing

[Leelee]

Hi guys i have a 2019 ec 250 but i belive it was a 300 and the importer changed the barrel and piston to make it a 250 as there were non left when i wanted one.
Its a brill bike but it feels like theres a big hole in the gearing just before the power valve opens, not like my 2018 250?? I have not played with the pv yet i will this weekend, but my question is are the gearbox ratios the same??

[Jakobi]

What gearing did you run on the old one? Did they change the CDI as well?

[memphis2857]

Throw the stock 48 tooth sprocket in the bin and get a 50. Or if you don’t want to buy a new chain and rear sprocket, just throw a 12 tooth on the front for now. Also set the PV at 1.5 turns out as a baseline. Pull the stock needle out of the carb and bury it somewhere so it can never be found and go with a N3CH or NEDW/NEDJ needle.


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[Leelee]

Hi memphis its got the suzuki nesle in it and 13/50 sprockets same as my old 250, i assume they did the ecu as it was the main importer who did the swap.
Just dont feel the same but i have not touched the PV yet, guess i will do that and see how it feels 👍