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TX125 / Re: Modifications
« Last post by stemigg on March 23, 2015, 10:37:07 AM »
Today I have removed my exhaust can, cut it open and discovered 3 chambers inside with lots of pipes taking the flow of gas in and out of each chamber at least twice . So I removed the last 2 chambers, kept the first for noise reduction. There was a short baffle in chamber 1, I drilled a few of the holes out from  6mm to 10mm. The pealed the can shut and welded it up.

I'm a welder and found this pretty easy, it took a good couple of hours to do so, for most its probably cheaper to buy a new can, but its V difficuilt to find, i know.  Cant find one anywhere??? So thats why I spent a couple of hours doing it this way.

I also considered installing a K&N air filter to get more air in to help balance out the rich mixture. Although after speaking to a mechanic he recommended not to do so because of breather pipes x 2. He suggested keep the original air box and to cut holes out of it to help increase air intake. Standard intake holes are usually too small (another way of slowing bikes down).  So i have done as he suggested.  But make sure you guys cut your holes out before the foam insert, do not bypass the filter.

I'm going to refit the can and air box on my return from work.  I will keep you guys updated on performance changes.  But I'm sure this will make a great difference!
TX125 / Re: poor running when cold
« Last post by stemigg on March 23, 2015, 10:01:06 AM »
Theres a spring loaded screw underneath the bowl on the carb and is accessible without removing panels etc  Turn this clockwise and this will increase your idling (Tick over) speed.  I had similar problems, but increasing tick over stops it from cutting out.   
General Discussion / Re: parts required for superlight ltd
« Last post by Scootercraft on March 22, 2015, 03:49:44 AM »
Hello. I can help with spare parts.
F-ACT / Re: f-act 125 58reg
« Last post by Scootercraft on March 22, 2015, 03:42:18 AM »
Hello. I can help with spare parts. What parts are needed?
TX125 / Re: Modifications
« Last post by stemigg on March 22, 2015, 03:40:08 AM »
Hi everybody, just bought a ktm 125 tx for my partner as a practice bike for her to build her skills up until she gets a bigger bike.  but im a bit disappointed with overall speed and sound.  Ive been searching everywhere for tips and videos of how to de restrict with no joy.

I'm a welder and a bit of a tinkerer and ive currently got the bike stripped down trying to de restrict for a bit more power.

Currently ive found in the exhaust manifold pipe half way along there's a small bulge in the pipe, i removed the pipe cut into the bulge and removed all the corrugated aluminium. refitted the exhaust and it sounds much better and a little more responsive. although not much better, top end hasnt changed niether.

I have now removed the air box as i am considering installing a k & n cone type air filter directly onto the back of the carb but there are a couple of pipes running into the air box that i need to deal with.  One from the carb and one from the engine block, im guesiing they are for over flow, can i cap them off? would this cause any problems anywhere else?

Also considering installing a slightly bigger main carb jet, has anyone any recomendations about size?

also considering boring out inlet port and exhaust port on the cylinder head with a dremmel? anyone any tips?

At the end of the day to get bikes moving faster you gotta get more fuel and air in and also remove (exhaust) burnt gasses faster.

Also could install a bigger rear sprocket to take load off engine.

If anyone has stumbled across anything with the tx 125 or could help with air box problems and cylinder head problems then i will be very greatfull.  I will also update any progress i make. thanks stevo
TX125 / wiring diagram
« Last post by deacon on March 16, 2015, 07:30:31 AM »
Hi as any one by any chance have a diagram for TX 125 iv just bought one cheap as some butcher as put a snap back throttle on removed the switch gear and removed all light many thanks in advance
TX125 / Re: poor running when cold
« Last post by zim on March 15, 2015, 11:30:03 AM »
sorry guys not been on here for a while

i sorted my bike out it was the exhaust valve not set right so i reset it and bingo runs like a new bike and iv had no more problems iv run all winter and its run like a dream hope this helps

Pics and Vids / Re: Video by
« Last post by Ashantier on February 03, 2015, 02:10:14 AM »
View this media, it was easy to understand. Can be applied to practical.
General Discussion / Re: Hello im new in this forum i have just brought tx200
« Last post by Ashantier on February 03, 2015, 02:10:08 AM »
Is a pretty good post. Where can I find more information on it here.
General Discussion / tx125s
« Last post by andya on January 28, 2015, 07:55:01 AM »
started my bike to go to work this morning ok and as I was getting on it cut out as if I had put the stand down or hit the cut out switch. It will now not start. All ignition comes on but does no turn over.
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