MK1 exhaust on ypvs power difference?

[zalle]

Hi guys, is there any difference in power if I'm using a MK1 exhaust in a ypvs model? In my country all versions are unrestricted.

By the way, mine has a 1mm bigger piston, it goes up to 130cc. Does this make any difference in hp or top speed?

Thanks

[zalle]

No one knows this? Do MK1 and later exhausts produce the same power?

[raven13]

tried every version of rd125lc exhaust on mine and if im honest there isn't a great deal of difference between them