All the3 Kymco 50cc bikes will swap CVT parts except the ZX variator drive boss.
Your engine is a horizontal. That means the cylinder is horizontal.
You can go to Any Kymco web site that has the micro Fiche or parts break down, and see exactly what engines are in what bikes, and what pipes/ cylinders will swap. I THINK they all swap parts except the S9, and the ZX 50 which are no longer made.
Everyone has to keep in mind SPI is a store/bike building shop/on line shop. The guy builds bikes for a living. He can not answer every phone call that comes in.
You can set up your account with any of the girls that answer the phone, and come here for advice on the parts.
Once your account is set up the web site will show the dealer prices.The only issue I have ever had w/ SPI is MOST of what he has access to is not updated on the web site. those special items or no longer in production bikes will require patience in getting hold of him to see what he has.