performance pipes

[dwint51]

I've had many dirt bikes and street bikes and every model has there own pipe so it fits on that model.I bought a roketa mcr-07t-50.there are a few company's that sell these two trokes.it looks like the bahama and jonway to name a few.minerelli engine 50cc two stroke.what should I do when I call a company and say I want a performance pipe.I have called two and they never heard of those chinese models.