It probably the insides that is different, i think its the same tailpipe. not sure about the flange end
:rotflmao: :rotflmao: Laugh i nearly wet myself.Major Ingram said:The valve is called a thingy-valve
Yeh, i knew it was to do with sound. I'll make sure i get the correct name for it on Monday.ZR Stevo said:The thingy valve opens at high revs above 5k i think and its to make the engine quieter until then.
They only test sound emmisions to 5k.
It is. :beer:tebster said:I thought it was only the original back box which contained the thingy valve ?....lol
................but i have an orginal 160 back box on my ZR 105 & it went straight on with no mods?.Online Shop Admin said:Between the ZR 1400 AND 1800,(original fitment) the back box is different, back box to centre section gasket is different, centre section is different, centre section to front pipe gasket and front pipe. So basicaly the whole lot is different is what i'm trying to say :eyes:
So the Major is probably right, the bore sizes are different.
All i know is that the EPC shows the exhausts to be different from each other, so i don't know.The Grim Reaper said:................but i have an orginal 160 back box on my ZR 105 & it went straight on with no mods?.