2018 KTM 150sx WHO HAS ONE? Impressions?

jeffro503
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jeffro503 1/29/2018 1:07pm
1/29/2018 1:07pm
ginger969 wrote:
Lectron or Keihen?
ML512 wrote:
Keihin, I tried all three...Keihin with good jetting was definetely the best power characteristic. The Lectron felt crisp, but a little on the mellow side...
erik_94COBRA wrote:
What jetting did you end up with on the Keihin?
I'd like to know this too , for a good starting point. I'm waiting to hear back from the JD jetting guys , and I think I'm picking up the Keihin for my Husky 125. The Mikuni makes good power for sure , but you have to have it tuned perfectly. It seems even at a 10 - 15 degree difference and it's time to re-jet again. Starts to get old after a while. The Keihin on my RM 250 is just stupid simple.
jeffro503
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jeffro503 1/29/2018 1:14pm
1/29/2018 1:14pm
jeffro503 wrote:
Side note / question : I wonder how that C12 compares to VP 110? Both are non-oxygenated , but besides the 2% more octane , I...
Side note / question : I wonder how that C12 compares to VP 110? Both are non-oxygenated , but besides the 2% more octane , I wonder if there is a performance increase?
urbanlift707 wrote:
I always run sunoco 110 in my 17 250sx, they were out last time I was at the petro store so I got some c12. It...
I always run sunoco 110 in my 17 250sx, they were out last time I was at the petro store so I got some c12. It def packs more punch than 110.
Thanks Bruce and Urban......I think after I burn through this next 8 gallons or so I have left of the VP 110 , I'll be trying some C12.
689
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689 1/29/2018 1:36pm
1/29/2018 1:36pm
What parts are required to switch to a Keihin?

My understanding is it needs at least a new throttle cable & assembly?

The Shop

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Bruce372
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Bruce372 1/29/2018 1:46pm
1/29/2018 1:46pm
jeffro503 wrote:
Side note / question : I wonder how that C12 compares to VP 110? Both are non-oxygenated , but besides the 2% more octane , I...
Side note / question : I wonder how that C12 compares to VP 110? Both are non-oxygenated , but besides the 2% more octane , I wonder if there is a performance increase?
urbanlift707 wrote:
I always run sunoco 110 in my 17 250sx, they were out last time I was at the petro store so I got some c12. It...
I always run sunoco 110 in my 17 250sx, they were out last time I was at the petro store so I got some c12. It def packs more punch than 110.
jeffro503 wrote:
Thanks Bruce and Urban......I think after I burn through this next 8 gallons or so I have left of the VP 110 , I'll be trying...
Thanks Bruce and Urban......I think after I burn through this next 8 gallons or so I have left of the VP 110 , I'll be trying some C12.
I would ask your dealer for T2 jeffro. It's a great fuel and no messing with mixing
mark293
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mark293 1/29/2018 4:53pm
1/29/2018 4:53pm
^^^^^^^^^
DAYUM!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Braaaphole
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Braaaphole 1/29/2018 6:51pm
1/29/2018 6:51pm
BobPA wrote:
The Mikuni was used on the Japanese 125's forever...and they never got a bad reputation. In fact, it is still on the YZ125 and no one...
The Mikuni was used on the Japanese 125's forever...and they never got a bad reputation. In fact, it is still on the YZ125 and no one ever complains. I have never had any issues tuning a Mikuni.

Think you boys are buying into the internet rumors too much, and need to buy some brass...


Agreed. I have an 03 CR250 with the dreaded TMX carb. It took some research and time to get it dialed it, but it's money now. Everyone talks about how you're constantly having to change jets, I never touch them. I adjust the air screw as the temperature changes and that's it. I'm also running it on 100 octane leaded fuel, that helped a lot.
Ghost of Jabroni 1/29/2018 8:34pm
1/29/2018 8:34pm
ML512 wrote:
Take Mikuni....throw in trash...put Keihin back on... Cool
KTM Two Stroke wrote:
That is the reason i keep my SX 150 2016 and not to buy a newer Bike[img]https://p.vitalmx.com/photos/forums/2018/01/27/240535/s1200_10038E8E_C53C_4EA1_8F21_BFF6C93591D7.jpg[/img] [img]https://p.vitalmx.com/photos/forums/2018/01/27/240536/s1200_2BF4412B_5784_40C4_8A53_666DAFDC5402.jpg[/img] [img]https://p.vitalmx.com/photos/forums/2018/01/27/240537/s1200_D1D4DC56_7035_4719_A3C9_4E7008C2645D.jpg[/img]
That is the reason i keep my SX 150 2016
and not to buy a newer Bike





Nice job on the graphics.

CarlinoJoeVideo
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CarlinoJoeVideo 1/29/2018 9:52pm
1/29/2018 9:52pm
ML512 wrote:
Keihin, I tried all three...Keihin with good jetting was definetely the best power characteristic. The Lectron felt crisp, but a little on the mellow side...
erik_94COBRA wrote:
What jetting did you end up with on the Keihin?
jeffro503 wrote:
I'd like to know this too , for a good starting point. I'm waiting to hear back from the JD jetting guys , and I think...
I'd like to know this too , for a good starting point. I'm waiting to hear back from the JD jetting guys , and I think I'm picking up the Keihin for my Husky 125. The Mikuni makes good power for sure , but you have to have it tuned perfectly. It seems even at a 10 - 15 degree difference and it's time to re-jet again. Starts to get old after a while. The Keihin on my RM 250 is just stupid simple.
Hey guys, so I use this JD jetting setting from 0-3000ft at 1.25-1.50 turns out on the air screw:

2016 KTM 125
FMF Fatty Pipe
Shorty Silencer
50/50 VP C12(40:1) and 91pump(60:1) race days I’ll replace the 91pump with VP T4E.
Bruce372
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Bruce372 1/29/2018 10:11pm
1/29/2018 10:11pm
erik_94COBRA wrote:
What jetting did you end up with on the Keihin?
jeffro503 wrote:
I'd like to know this too , for a good starting point. I'm waiting to hear back from the JD jetting guys , and I think...
I'd like to know this too , for a good starting point. I'm waiting to hear back from the JD jetting guys , and I think I'm picking up the Keihin for my Husky 125. The Mikuni makes good power for sure , but you have to have it tuned perfectly. It seems even at a 10 - 15 degree difference and it's time to re-jet again. Starts to get old after a while. The Keihin on my RM 250 is just stupid simple.
CarlinoJoeVideo wrote:
Hey guys, so I use this JD jetting setting from 0-3000ft at 1.25-1.50 turns out on the air screw: [img]https://p.vitalmx.com/photos/forums/2018/01/29/241046/s1200_7B2A9EA4_F07A_4088_960A_00A0679FA077.jpg[/img] 2016 KTM 125 FMF Fatty Pipe...
Hey guys, so I use this JD jetting setting from 0-3000ft at 1.25-1.50 turns out on the air screw:

2016 KTM 125
FMF Fatty Pipe
Shorty Silencer
50/50 VP C12(40:1) and 91pump(60:1) race days I’ll replace the 91pump with VP T4E.
Joe, can you post a pic of your carb?
jeffro503
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jeffro503 1/30/2018 9:44am
1/30/2018 9:44am
erik_94COBRA wrote:
What jetting did you end up with on the Keihin?
jeffro503 wrote:
I'd like to know this too , for a good starting point. I'm waiting to hear back from the JD jetting guys , and I think...
I'd like to know this too , for a good starting point. I'm waiting to hear back from the JD jetting guys , and I think I'm picking up the Keihin for my Husky 125. The Mikuni makes good power for sure , but you have to have it tuned perfectly. It seems even at a 10 - 15 degree difference and it's time to re-jet again. Starts to get old after a while. The Keihin on my RM 250 is just stupid simple.
CarlinoJoeVideo wrote:
Hey guys, so I use this JD jetting setting from 0-3000ft at 1.25-1.50 turns out on the air screw: [img]https://p.vitalmx.com/photos/forums/2018/01/29/241046/s1200_7B2A9EA4_F07A_4088_960A_00A0679FA077.jpg[/img] 2016 KTM 125 FMF Fatty Pipe...
Hey guys, so I use this JD jetting setting from 0-3000ft at 1.25-1.50 turns out on the air screw:

2016 KTM 125
FMF Fatty Pipe
Shorty Silencer
50/50 VP C12(40:1) and 91pump(60:1) race days I’ll replace the 91pump with VP T4E.
Sweet Joe...thank you!!
CarlinoJoeVideo
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CarlinoJoeVideo 1/30/2018 8:32pm
1/30/2018 8:32pm
jeffro503 wrote:
I'd like to know this too , for a good starting point. I'm waiting to hear back from the JD jetting guys , and I think...
I'd like to know this too , for a good starting point. I'm waiting to hear back from the JD jetting guys , and I think I'm picking up the Keihin for my Husky 125. The Mikuni makes good power for sure , but you have to have it tuned perfectly. It seems even at a 10 - 15 degree difference and it's time to re-jet again. Starts to get old after a while. The Keihin on my RM 250 is just stupid simple.
CarlinoJoeVideo wrote:
Hey guys, so I use this JD jetting setting from 0-3000ft at 1.25-1.50 turns out on the air screw: [img]https://p.vitalmx.com/photos/forums/2018/01/29/241046/s1200_7B2A9EA4_F07A_4088_960A_00A0679FA077.jpg[/img] 2016 KTM 125 FMF Fatty Pipe...
Hey guys, so I use this JD jetting setting from 0-3000ft at 1.25-1.50 turns out on the air screw:

2016 KTM 125
FMF Fatty Pipe
Shorty Silencer
50/50 VP C12(40:1) and 91pump(60:1) race days I’ll replace the 91pump with VP T4E.
Bruce372 wrote:
Joe, can you post a pic of your carb?


Bruce372
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Bruce372 1/30/2018 8:45pm
1/30/2018 8:45pm
Thanks Joe. It all makes sense now, this is a bit better setup than the old screw top pwk.
MXJIM10
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MXJIM10 1/31/2018 3:08pm
1/31/2018 3:08pm
I can help you guys out. Maybe,just put the carb from the 16 KTM 150 on youre 17 and 18 model. Same engine minus the carb. Problem solved. Hopefully HaHa
suzukifa2014 2/1/2018 6:45am
2/1/2018 6:45am
I also heard that the 2018 SX 150 had some issue yes, jettings had to be changed completely.
Regarding having good performance,
VHM do some great parts for the 2016/2018 and you have the dyno numbers on youtube :
(they run HGS combo)
https://www.youtube.com/watch?v=llJ5jtf07BA
43,5 HP with VHM cylinder head and hgs combo.
ginger969
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ginger969 2/1/2018 3:55pm
2/1/2018 3:55pm
suzukifa2014 wrote:
I also heard that the 2018 SX 150 had some issue yes, jettings had to be changed completely. Regarding having good performance, VHM do some great...
I also heard that the 2018 SX 150 had some issue yes, jettings had to be changed completely.
Regarding having good performance,
VHM do some great parts for the 2016/2018 and you have the dyno numbers on youtube :
(they run HGS combo)
https://www.youtube.com/watch?v=llJ5jtf07BA
43,5 HP with VHM cylinder head and hgs combo.
sheez 43.5hp! legit
Bruce372
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Bruce372 2/1/2018 4:05pm
2/1/2018 4:05pm
suzukifa2014 wrote:
I also heard that the 2018 SX 150 had some issue yes, jettings had to be changed completely. Regarding having good performance, VHM do some great...
I also heard that the 2018 SX 150 had some issue yes, jettings had to be changed completely.
Regarding having good performance,
VHM do some great parts for the 2016/2018 and you have the dyno numbers on youtube :
(they run HGS combo)
https://www.youtube.com/watch?v=llJ5jtf07BA
43,5 HP with VHM cylinder head and hgs combo.
ginger969 wrote:
sheez 43.5hp! legit
Depends on the dyno don't forget... any dyno hp claim is useless without the stock bike run on the same dyno for reference

Pit Row

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suzukifa2014 2/2/2018 10:44am
2/2/2018 10:44am
VHM are European and world champion, i don't question their dyno results.
You have in the video what make the stock motor with hgs combo, its 41...bone Stock,it must be 40 (almost like previous motor).
with a 58mm piston, it's difficult to have top end, and stock vertex 2 rings pistons are pretty heavy.
On my 2015 I was running the ktm head for sand tracks, I also have tried single ring piston,
But there was a decrease in torque.
Most of the riders in emx 125 runs the mikuni carb,
You have different gas in USA, may-be its the main reason it needs more accurate jettings.
HenryA
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HenryA 2/2/2018 11:30am
2/2/2018 11:30am
suzukifa2014 wrote:
I also heard that the 2018 SX 150 had some issue yes, jettings had to be changed completely. Regarding having good performance, VHM do some great...
I also heard that the 2018 SX 150 had some issue yes, jettings had to be changed completely.
Regarding having good performance,
VHM do some great parts for the 2016/2018 and you have the dyno numbers on youtube :
(they run HGS combo)
https://www.youtube.com/watch?v=llJ5jtf07BA
43,5 HP with VHM cylinder head and hgs combo.
ginger969 wrote:
sheez 43.5hp! legit
Bruce372 wrote:
Depends on the dyno don't forget... any dyno hp claim is useless without the stock bike run on the same dyno for reference
Check the end of the video Smile
Bruce372
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Bruce372 2/2/2018 12:09pm
2/2/2018 12:09pm
suzukifa2014 wrote:
VHM are European and world champion, i don't question their dyno results. You have in the video what make the stock motor with hgs combo, its...
VHM are European and world champion, i don't question their dyno results.
You have in the video what make the stock motor with hgs combo, its 41...bone Stock,it must be 40 (almost like previous motor).
with a 58mm piston, it's difficult to have top end, and stock vertex 2 rings pistons are pretty heavy.
On my 2015 I was running the ktm head for sand tracks, I also have tried single ring piston,
But there was a decrease in torque.
Most of the riders in emx 125 runs the mikuni carb,
You have different gas in USA, may-be its the main reason it needs more accurate jettings.
Yeah, it's cool they are still doing work on smokers. Looks like they got 1.5hp at peak and 1-2hp up the curve which is what we are seeing elsewhere with pipe and head mods.
endurox
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endurox 2/2/2018 2:04pm
2/2/2018 2:04pm
Bike is a blast. Filed the slide to 5.75mm on cutaway. VHW head with SX insert(set up for trail riding). Running 40 pilotJD blue needle and 460 main.
Bruce372
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Bruce372 2/8/2018 5:32pm
2/8/2018 5:32pm
Hgs pipe looses power vs stock. Fatty beats stock


Squirrelings 2/8/2018 5:37pm
2/8/2018 5:37pm
731chopper wrote:
I have a 16 150 and I wish it had more overrev. It has basically none.
BobPA wrote:
You know it has a shifter, right?
That's a true KTM fanboi. Bike sucks? Nah... you don't know how to ride.
opyguy
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opyguy 2/8/2018 7:48pm
2/8/2018 7:48pm
Bruce372 wrote:
Guess which line is the Kehin carb... [img]https://p.vitalmx.com/photos/forums/2018/02/08/242780/s1200_IMG_20180208_WA0001.jpg[/img]
Guess which line is the Kehin carb...


Light blue?
I know I'd rather ride the dark blue...
Bruce372
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Bruce372 2/8/2018 8:01pm
2/8/2018 8:01pm
Bruce372 wrote:
Guess which line is the Kehin carb... [img]https://p.vitalmx.com/photos/forums/2018/02/08/242780/s1200_IMG_20180208_WA0001.jpg[/img]
Guess which line is the Kehin carb...


opyguy wrote:
Light blue?
I know I'd rather ride the dark blue...
Negative. The best line is the kehin
Aaronjessica177 2/8/2018 11:52pm
2/8/2018 11:52pm
Sx 150 just had a ful engine tune,cylinder porting work,crank balanced,crankcase volume altered,cylinder head machined and air box mods.
Hoping to try it this weekend if the weather allows here in the uk.





opyguy
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opyguy 2/9/2018 7:13am
2/9/2018 7:13am
Bruce372 wrote:
Negative. The best line is the kehin
so what color is the best line (light or dark blue).?.pardon my ignorance but I'm a 50 year neophyte..thanks.

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