Yz exhausts ?
 

I read somewhere that some yz exhausts will fit a gasgas EC 125 .. anyone know which year etc as there's more selection of used yz pipes here in the UK than for gasgas ..

I heard that rumor too but do not know details. I would first try the 2000 to 2004 and if that does not do it I would next try the 2005 to 2016 yz125 pipe. GG copied and maybe even uses Yamihaha parts for the PV in 2003 so unless they had access to the future YZ designs they are probably similar to the 2000 to 2004 YZ.