DT125R FORUM

@CYBER-NINJA Thanks for the feedback Ninja!

@Calum Sorry for the late response.. But thanks for the feedback!

Hi, does anybody know the color code of the metallic grey used on the clutch cover of an DT 125r from 2001?

@Calum Crap! I already did the modifications on the inlet manifold. I hope i didn't mess up my bike.
@Darty Thanks for your explanation! I will stop 'abusing' the reed valve stopper. I ordered the Boyesen dual stage reed valves so I wont need the stopper anymore. But like i said to Calum, I already did the modifications to the inlet manifold. Maybe I was a bit naif.
But I have read on 'scrimsmustangs' (when it was still online) that one of the restrictions on the 2001 bike is that 'square rubber nose' and that you had to cut off the whole part. So cutting away some parts seemed not so drastic as removing the whole part.

@ Minia.. Thanks Friend!
@Mightyman... My bad.. I'll try to use the imgr.com
@Darty Thanks man! I just love that Deep purplish metallic

@ Mightyman... You said it right, he tried
@ Cyber Ninja ... Thanks Man!!

Hi There, I found some small tuning info from a French dude and I was wondering what you guys think of this?
 

I adjusted the inlet manifold where it goes inside the reed cage (made it YZ style, see pictures ‘these pictures comes from the French site... yam2stroke’).
I also want to adjust the reed valve stoppers, so that more air will come through. Is this a good idea? Or should I leave it original?
I am going to give my bike a lot of air so that means I will need to adjust the main jet. But the main jet only is useful when I go full throttle if I am correct?

I have been looking around and I only get info about main jets (that I need to get a bigger one) so was thinking putting in a 250 and maximum a 260 main jet.

But what about the pilot jet (it’s a 25 according to the Haynes manual). Shouldn’t I get a bigger pilot jet?
And what would be the ideal size?

Also where can I get good main jets and pilot jets? ( I have a Mikuni TM28SS). I would like some different sizes so I can test away.

Then there is the oil matter… The DT has a oil pump that is automatic. So I guess that it’s set to the original factory settings (240 main jet, etc.)? Do I need to give more oil? Since I am going to give the carb more gasoline and air? Or do I just leave it as it is?

Any help I much appreciated!

Regards, Timo

Thanks Master Calum! The previous owner drilled holes in the rear fender to add a custom made rear light. I didn't like it (was to big) and bought a new one.
He also welded his own mudguard / license plate holder. Witch I also removed. The bike looks like this now

Halloha, My name is Timo (from Belgium) and I have a DT 125 r from 2001. I bought this beauty a year ago. This is my first 2 stroke and i just love the power. The first bike i bought was a Honda xr 125 and I sold that bike after a year. The difference in power is just amazing!!
I want to adjust some small things (jets/air intake and reeds) on my bike and I am looking forward on learning.