DT 125 RE/X DERESTRICTING GUIDE [15 TO 25 HP] - PowerValve and Exhaust 

I bought a brand new DT125R in 1989. I ran it in as advised but after running it in, was disappointed that it would struggle to go above 60 mph. I had just pxd a TS125X for this and that would do 75 mph. Then I learned about the power valve. I altered it with the info I received and the bike would go off the clock (over 80mph) never knew its actual top speed. Only thing was, was that the lovely smooth exceleration it had standard was lost. It was pretty much dead till you hit the powerband and then it went mad.

Hi peter great video just bought one myself and love the tips your giving keep up the good work my friend

Hey, do you know if that muffler fits the original exhaust? I want that muffler but with the original exhaust but I don't know if it's compatible. Great channel, I have the same bike, learn a lot from you!

My dream bike

hi peter, do you know if this mod i possible on a tdr 125 1991 3sh1, because when I look at the connector with 4 wires with the green one, 4 come in in and 4 come out but the bike seems to stop revving when I get it to 8500-9000 rpm and I thought it was something with an rpm limiter. I know that the tdr and the st are very similar so I thought there probably is an rpm limit. if you could tell me if you know something that would be good. thank you

the bottle thats botled to the frame can be removed by replacing the pipe that goes from the airbox to the carb with one from an earlier DT model, it helps with pick up.

15hp ca to go 30-40k 25hp derestrict can? Max

I recommend to get main jet from dtr then see if the micture is right

best exhaust on dt is Athena exhaust, gianneli work well to hi rpm

I have just bought an LC2 125 instead of messing around with these things. LC2 is stock 22HP, Mine has an exhaust without the stuff inside(empty exhaust) it has now around 24-25HP :) Plus I have a "200"main jet ;)

Hi Peter, Can you tell me iff the 91 tdr Belgarda (3SH)is using the same frame as the DT ? Airbox and exhaust look the same . ff it is i can get a DT gianelli exhaust. Maybe you know iff the tdr is restricted? Does not feel like 23hp to me. Thanks

can you write to me what is this cable cutting? I do not know how it is possible that after cutting it the valve opens to the max?

hi peter-old DT DRIVER. can you do that change the brake pads behind ? thanks.

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Does powervaulve work on yamaha TDR 125cc

how often do you have to change piston is it the same as a yz125

You can olso rotate power valve 180°

e per un DT125R del 1991 sai come si fa a sbloccare?

che ne pensi di allargare il l'airbox invece?

210 originali

Minuto 3:42 mi spieghi a cosa servono quei due pezzi in plastica? Ho smontato quello di lato, è vuoto e collegato alla cassa filtro

My dt x 2007 is with the 5 gear faster than the 6gear???

Ciao, perché non metti i sottotitoli in Italiano o parli italiano che secondo me ti riesce pure meglio?😅

Nope Nope and Nope Full dep system and stage 2 shorty mate..you will find with black widow and Aarow they are very loud and if ya live in built up area and go to work on your bike half the town can hear you my full Aarow system was very expensive £480 for full rig and black widow was a bit cheap but very loud ...Now the full DEP system and shorty is not so loud but sounds the dogs bollox but also gives you full power ...

Older model more easy things