WAja 1.6 exhaust

[ericko]

my fren got a waja 1.6.. he wanna change exhaust.. but he dunn wanna change the mid piping.. only wan to change to muffler area... any idea for it??? 2" or 2.5"?

 

[bnr34]

for the size of the outside hole, 2'', 2.5'' or 3'' also ok.
but the important is the inside hole, if it is auto, better use back 1.6'', if manual, up to u, want 1.6''-1.8' also can. since he dint want to change whole piping, so better 1.6''.