Spoke with my wallet....

Sweet bike!

Skip the Lectron, get a PWK with a STIC.

Just rejet the stock carb and it will be awesome. I can get you jetting specs. for it if you'd like.

No need to change carbs.

AJ565 wrote:

Just rejet the stock carb and it will be awesome. I can get you jetting specs. for it if you'd like.

AJ565 wrote:

Just rejet the stock carb and it will be awesome. I can get you jetting specs. for it if you'd like.

...more

Yeah, what are you running? What altitude/temp are you riding in currently?

Check if the reeds seal correctly. My buddy bought a 125sx and the reeds were warped. We tried forever to jet it and couldn't get it right.. he installed a vforce and it ran great immediately.

We're at 550' elevation and in the high 90's right now. This should get you in the ball park though.

Pilot 30
Main jet 470
Needle 2019 Needle 42-71 at the 3rd clip
Slide 5.5. Either have yours cut or you can order one from a 2004 KX125 part #16025-0002
Air screw you'll have to set yourself. maybe 1.5 out to start.

Mix your gas at the books spec. I think it’s 60:1...? sounds crazy...but Supposedly fixes the issues. No jetting to mess with after that.

AJ565 wrote:

We're at 550' elevation and in the high 90's right now. This should get you in the ball park though.

Pilot 30
Main jet 470
...more

AJ565 wrote:

We're at 550' elevation and in the high 90's right now. This should get you in the ball park though.

Pilot 30
Main jet 470
Needle 2019 Needle 42-71 at the 3rd clip
Slide 5.5. Either have yours cut or you can order one from a 2004 KX125 part #16025-0002
Air screw you'll have to set yourself. maybe 1.5 out to start.

...more

Awesome, i will try this setup hopefully this upcoming weekend.

GeorgiePorgie wrote:

Mix your gas at the books spec. I think it’s 60:1...? sounds crazy...but Supposedly fixes the issues. No jetting to mess with ...more

GeorgiePorgie wrote:

Mix your gas at the books spec. I think it’s 60:1...? sounds crazy...but Supposedly fixes the issues. No jetting to mess with after that.

...more

Manual calls for 40:1

Then 40:1 it is!

Maybe 250sx Is the 60:1 grinder..

GeorgiePorgie wrote:

Then 40:1 it is!

Maybe 250sx Is the 60:1 grinder..

GeorgiePorgie wrote:

Then 40:1 it is!

Maybe 250sx Is the 60:1 grinder..

...more

It is. The 125 and 150 run 40:1.

Looking forward to ride report-enjoy!

nice choice, skip the Lectron... if you must change carbs, try the Smart Carb or Keihin with a STIC. Really though, the stock carb is just fine as are the stock reeds. Ride the beeyotch before dumping money into it.

You can mod the stock slide, put a small notch on it and run a 16 or 17/62 RM needle and the bike will rip.

BR8ES wrote:

nice choice, skip the Lectron... if you must change carbs, try the Smart Carb or Keihin with a STIC. Really though, the stock ...more

BR8ES wrote:

nice choice, skip the Lectron... if you must change carbs, try the Smart Carb or Keihin with a STIC. Really though, the stock carb is just fine as are the stock reeds. Ride the beeyotch before dumping money into it.

You can mod the stock slide, put a small notch on it and run a 16 or 17/62 RM needle and the bike will rip.

...more

The plan is to get the Mikuni thats on it as spot on as I can with the jets given to me when I bought the bike. Then I need to get a stiffer rear spring. After that I plan to just ride it for a while. Don't need much for someone who just rides on the weekends.

BR8ES wrote:

nice choice, skip the Lectron... if you must change carbs, try the Smart Carb or Keihin with a STIC. Really though, the stock ...more

BR8ES wrote:

nice choice, skip the Lectron... if you must change carbs, try the Smart Carb or Keihin with a STIC. Really though, the stock carb is just fine as are the stock reeds. Ride the beeyotch before dumping money into it.

You can mod the stock slide, put a small notch on it and run a 16 or 17/62 RM needle and the bike will rip.

...more

chaseNCMX wrote:

The plan is to get the Mikuni thats on it as spot on as I can with the jets given to me when I bought the bike. Then I need to ...more

chaseNCMX wrote:

The plan is to get the Mikuni thats on it as spot on as I can with the jets given to me when I bought the bike. Then I need to get a stiffer rear spring. After that I plan to just ride it for a while. Don't need much for someone who just rides on the weekends.

...more

yep, great bike, enjoy!

BR8ES wrote:

nice choice, skip the Lectron... if you must change carbs, try the Smart Carb or Keihin with a STIC. Really though, the stock ...more

BR8ES wrote:

nice choice, skip the Lectron... if you must change carbs, try the Smart Carb or Keihin with a STIC. Really though, the stock carb is just fine as are the stock reeds. Ride the beeyotch before dumping money into it.

You can mod the stock slide, put a small notch on it and run a 16 or 17/62 RM needle and the bike will rip.

...more

The stock reeds are not OK. Every one I’ve seen, including mine, are not sealing.

OP- Put the V-Force on it when you jet the bike, or you’ll be chasing your tail.
The Mikuni carb works perfect on mine with the corrected jetting. I know there’s a lot of different opinions on jetting, but if you end up wanting my jetting specs that I got from KTM, you can message me. I don’t have them handy at the moment...
your jets that came with the bike will not be as good as you’ll want it.

BR8ES wrote:

nice choice, skip the Lectron... if you must change carbs, try the Smart Carb or Keihin with a STIC. Really though, the stock ...more

BR8ES wrote:

nice choice, skip the Lectron... if you must change carbs, try the Smart Carb or Keihin with a STIC. Really though, the stock carb is just fine as are the stock reeds. Ride the beeyotch before dumping money into it.

You can mod the stock slide, put a small notch on it and run a 16 or 17/62 RM needle and the bike will rip.

...more

langhammx wrote:

The stock reeds are not OK. Every one I’ve seen, including mine, are not sealing.

OP- Put the V-Force on it when you jet the ...more

langhammx wrote:

The stock reeds are not OK. Every one I’ve seen, including mine, are not sealing.

OP- Put the V-Force on it when you jet the bike, or you’ll be chasing your tail.
The Mikuni carb works perfect on mine with the corrected jetting. I know there’s a lot of different opinions on jetting, but if you end up wanting my jetting specs that I got from KTM, you can message me. I don’t have them handy at the moment...
your jets that came with the bike will not be as good as you’ll want it.

...more

for everyone that says they are not ok, there are equally as many that have had no issues. Some have even wasted money on the VF4R or Boyesen and have noticed no difference,some have even gone back to stock, ...many chase their tail because the float level is off. Many of the problems are internet based hysteria.

Awesome! I ordered the jd jet kit for mine and it was spot on and I'm located in Clayton so I'm sure we ride the same tracks.

dwilli150 wrote:

Awesome! I ordered the jd jet kit for mine and it was spot on and I'm located in Clayton so I'm sure we ride the same tracks.
...more

dwilli150 wrote:

Awesome! I ordered the jd jet kit for mine and it was spot on and I'm located in Clayton so I'm sure we ride the same tracks.

...more

Nice man, and yea probably. NCMP and Cowbranch are my go tos but I go all over NC/VA.

Fudgesickle YES!!! Nice, envious!!

no, they are not. Thank the internet for the majority of it. More people spend time on forums, more they find out things are "wrong", meanwhile...majority of poeple that aren't glued to forums ride these things box stock, follow the manual and have fun.