r there any dt125r riders that live in northants and want 2 get together for a burn.contact [Log in to view email]
-
Owned for 3 months.
Preloved Visitor
Reviewed October 2003.
Performance
Reliability
Parts Availability
Overall Value for Money
Hey my Dt125R which i picking up this sunday is got a cr 125cc race tuned engine,my powerband is lethal and it jus spins wheelies every fuckin where (2001) model i shit my self going down this road in swansea changed into second doing bout 20 in 1st the i full throttled and it just shot in the air selling soon cos its to scary expierienced owners may ask for details!! Capeesh
Owned for 1 month.
Preloved Visitor
Reviewed October 2003.
Performance
Reliability
Parts Availability
Overall Value for Money
you can now make them a 155 cc with a big increase in power and torque
Owned for more than 5 years.
Preloved Visitor
Reviewed October 2003.
Performance
Reliability
Parts Availability
Overall Value for Money
could i get more power if i add mikuni 34mm carburator in my dt? std. carb. is 28mm. i will add a powermuffler and ramair aircleaner in my bike too...
Never owned
Preloved Visitor
Reviewed October 2003.
Performance
Reliability
Parts Availability
Overall Value for Money
deristricted and still smooth power usable power with a punch
Owned for 3 months.
Preloved Visitor
Reviewed October 2003.
Performance
Reliability
Parts Availability
Overall Value for Money
i think my 02 model looks and handles the dogs bollox but even with the powervalve opened up i still can't get more than 65mph out of the thing.it's as flat as a witches tit over 7000rpm.have been told the newer models are restricted to death by the standard exhaust system so have ordered a full dep pipe and silencer to try and sort it.
nice bike when race tuned very fast as standard model. full DEP race pipe wanted email to [Log in to view email] £100 awaiting
Ian/Sunderland/16
Owned for 3 months.
Preloved Visitor
Reviewed September 2003.
Performance
Reliability
Parts Availability
Overall Value for Money
Just bought a 2001 DT, can't rev past 7k or go faster than 90kph...need to get it derestricted but I'm not sure how as so many different things are mentioned here!
Owned for 1 month.
Preloved Visitor
Reviewed September 2003.
Performance
Reliability
-
-
Parts Availability
Overall Value for Money
-
-
does anybody know the frame numbers and engine numbers refering to what year of bike it is i looked at one lastnight and it was an old bike with various 1999 on parts fitted i need a cross reference
-
Never owned
Preloved Visitor
Reviewed September 2003.
Performance
Reliability
Parts Availability
Overall Value for Money
hey i just got DT about 2 months ago 02 reg and its pretty good. anyway iv had it break down on me twice now and its really starting to take the pi$$. first time it was spark plug so we changed it, and it did it again with brand new plug. it smokes a hell of a lot even for a stroker. what the hell is wrong with it- any help apreciated mail me at [Log in to view email]
Owned for 1 month.
Preloved Visitor
Reviewed September 2003.
Performance
Reliability
Parts Availability
Overall Value for Money
deristricted my dt pulled the top out of the air box gets to 60 as quick as u like, took it of road spins a lot and the shocks bottem out if u jump to high raced every other 125 where i live KMX,TZR,RGV,GP,even beat a honda civic.
Owned for more than 5 years.
Preloved Visitor
Reviewed September 2003.
Performance
Reliability
-
-
Parts Availability
Overall Value for Money
-
-
Carbon reeds give you a much better throttle response at all revs. Great for them pull-aways! ;0 Keep your wieght over the tank!
-
Owned for 3 months.
Preloved Visitor
Reviewed September 2003.
Performance
Reliability
-
-
Parts Availability
Overall Value for Money
-
-
Carbon reeds give you a much better throttle response at all revs. Great for them pull-aways! ;0 Keep your wieght over the tank!
-
Never owned
Preloved Visitor
Reviewed September 2003.
Performance
Reliability
Parts Availability
Overall Value for Money
Does ne 1 no where i can get hold of a dep system of the web or mail order in the uk what do difference do carbon fiber reeds make
Owned for 3 months.
Preloved Visitor
Reviewed August 2003.
Performance
Reliability
Parts Availability
Overall Value for Money
Hi,
I own a 1999 DT125R and i'm very pleased with it. However, the CDI Unit on my bike does not control the YPVS Servo correctly. On initial throttle application the Exhaust valve turns the wrong way before going on to open fully. By substituting a known good CDI Unit from another bike of unknown year the YPVS system operates correctly. Does anyone know if it is possible to modify the wiring on the original CDI to achieve the same result?
Owned for 3 months.
Preloved Visitor
Reviewed August 2003.
Performance
Reliability
Parts Availability
Overall Value for Money
any 1 in manchester selling a broken dt 125 for £200
Never owned
Preloved Visitor
Reviewed July 2003.
Performance
Reliability
Parts Availability
Overall Value for Money
HI i am just wondering where all of the restrictions on the 2001 DTr are. If anyone know please email me [Log in to view email]
Never owned
Preloved Visitor
Reviewed July 2003.
Performance
Reliability
-
-
Parts Availability
Overall Value for Money
-
-
brought a dt125 black in 2000 did 60mph standard changed the silencer from a standard to a BIG ONE and PLATIUM NGK did 70MPH+ had that nicked 2001 and now brought dt125 blue 1998 does 55mph standard want to put full DEP EXHAUST and NGK BR8EIX IRIDIUM if any body has tried this please e-mail me on [Log in to view email]
-
Owned for 1 month.
Preloved Visitor
Reviewed July 2003.
Performance
Reliability
Parts Availability
Overall Value for Money
Right then, the good news is that anyone with a pre-1999 Yamaha DT125R can easily release another 10bhp+. All that is required is an adjustment to the powervalve on the left-hand side of the cylinder. By taking off the exhaust and looking up the port with your missus' vanity mirror it is easy to "tune" the engine. Obviously, a bigger exhaust port means more top end and a smaller exhaust port means more bottom end - if you have a servomotor fitted you get the best of both worlds when set up right (get a mate to turn the ignition on and off while you check and adjust the valve). A straight through tailpipe such as a Dep is ideal, but really I see no benefit in replacing the whole system on these models (other than for pose value). No kidding, 95mph verified (because the speedo only goes up to 80mph) on my 1989 model (getting your riding position right - to avoid serious speed wobble - takes practice) with servomotor imported unofficially.
From 1999 to 2003 (which will probably the last year of the DT125R) those nice people at Yamaha have altered the exhaust port and powervalve to make de-restriction somewhat more difficult. Furthermore, I have found that the factory powervalve settings seem to vary - a friends 2002 model was set up perfect (checked by looking up the port, as before) but my 2002 model needed attention to keep pace. This can have a dramatic effect on the performance, and accounts for the, mine does being quoted in the range of 60-75mph get it right and 75mph with the wind in your favour is possible (just, but realistically 70mph). The expansion chamber has also been given some attention internally and, short of taking a grinder to it, cannot easily be sorted. However, a full Dep system now comes into its own, releasing another couple of bhp (that's still a 15%+ increase in power!) enough to ensure 75mph, with just over 80mph possible on a good day. As far as I can ascertain, stories of CDi restriction are just that stories.
As for reliability no problems, i.e. 15,000 miles of seriously hard riding and never required a rebuild. Be sensible service the thing and it will service you.
Not enough? Contact Stan Stephens
Owned for more than 5 years.
Preloved Visitor
Reviewed June 2003.
Performance
Reliability
-
-
Parts Availability
Overall Value for Money
-
-
whatever it takes please please put a full DEPsystem on your DT, i was going to sell my 02 reg bike after 4 months of ownership, cos all bike shops said u need to spend loads of cash to derestrict them. crap my exhast was £189 compleat now had bike for 1 year and still fucin love it best cash i ever spent .alan c.
All ratings and reviews are submitted by visitors to this web site, and represent their own personal opinion. They do not necessarily represent the views or opinions of Preloved.
You use this information at your own risk. Preloved can not be held responsible for any damages or loss resulting from the use of this site. Please see our Terms and Conditions for more details.
