DT125R ARCHIVE

DeeTee · DTR Senior Member

Exhausts: To gut or not to gut?

xGINCATx · Guru

My exhaust is off a 2004 model DTRE the writing on the exhaust says: YAMAHA ID0-00
This model has the cat convertor restictor and will need cutting open at the biggest part of the pipe to get to it.
I dont have any pictures but a big give away that you have this pipe is that the cover near where your right leg goes is made of plastic, and where the exhaust connects to the engine there is a pipe that comes out and connects to a rubber pipe which then goes to the airbox.
So before cutting open check if you have this writing on the exhaust and the other things i mentioned above;
Also be sure to look around the narrow bit of the exhaust which connects to the engine for any big blobs of weld because this might show that someone has already de-restricted it.

bigrvg · DTR Respected Member

Where is the part number on the exhaust?

yamahayz125 · DTR Senior Member

its inside the exhaust so you will have to cut it open to find the part number confuse

MDK · DTR Legend

some random pics of the net

this is a good pic

some tdr exhaust pics here

http://www.yam2stroke.fr/viewtopic.php?f=26&t=17538

bigrvg · DTR Respected Member

yamahayz125 wrote:
its inside the exhaust so you will have to cut it open to find the part number

Yeah, cheers for that mate. Maybe when I cut it open to get the part number, if I chemical metal over the stamp marks, then grind them smooth, I might get 1/8bhp extra hmm

Seriously, where is the part number? I've looked all over it, but can't seem to find it. Someone has hand painted it at some point with what looks like black Hammerite, so the stamp marks have probably been filled in.

MDK · DTR Legend

bigrvg wrote:
yamahayz125 wrote:
its inside the exhaust so you will have to cut it open to find the part number
Yeah, cheers for that mate. Maybe when I cut it open to get the part number, if I chemical metal over the stamp marks, then grind them smooth, I might get 1/8bhp extra
Seriously, where is the part number? I've looked all over it, but can't seem to find it. Someone has hand painted it at some point with what looks like black Hammerite, so the stamp marks have probably been filled in.

it some times on the fat out side part some where give it a rub down to find it then if need be repaint it

-- Edited by MDK on Saturday 25th of January 2014 01:00:55 PM

-- Edited by MDK on Saturday 25th of January 2014 01:01:23 PM

bigrvg · DTR Respected Member

Well, it looks like it says: Yamaha 3RM-00

MDK · DTR Legend

2001 aprox maybe ?

http://dt125r.activeboard.com/t49538320/2001-dtr-125-derestricted/?page=1

bigrvg · DTR Respected Member

A 2003. Just been googling and it looks like it needs to be cut open and the metal disc restrictor cutting out. I can mark up and cut and I may know someone who can weld it back together, so all's good.....hopefully!

yamahadt125 · DTR Senior Member

Was thinking of doing that to my 2007 re just to mmake it bit louder stock with cat sounds crap