Do i need to replace the crankshaft if i put on 60cc tuning kit

You can use the translater as well.

Nein, kann drin bleiben. Falls die noch gut ist.

You just need the standard crankshaft.

No, sometimes they send you FEZ Parts instead of MZA, even wen you have ordered MZA Parts.
They are even not the fastest.

I have made good experience with ost-oase or simso-shop, or on ebay with Kult-mopeds.

could you show as the set,that you want

https://www.akf-shop.de/tuning…kopf-bvf-19n1-leo/a-7073/
I think he wants to buy this one.
Please dont buy that crap. The cylinder has a very very low quality and thats the key point.
If you want to buy a good high quality tuning set then go to zt-tuning or RZT or JW... there are plenty of good oppertunities, that will suit you.
For example. Take the ZT S60N Stage2, which is a very good 60ccm cylinder with piston. A good exhaust for that cylinder would be the ZT Reso 2016. As a carburator i would take the RFVK21 CS from RZT. Furthermore you should consider to buy the ZT Airfilter, because the carburator will need more air than the stock one.

You also need the ZT Airfilter.
http://zt-tuning.de/ZT-Tuningl…filter-Halteblech-gebogen

What exactly is your budget?