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Only $10 for all 2026 SX, MX, and SMX series.
Good points.
There are plenty of ‘22s and earlier for sale if someone just wants a KTM or Husky.
https://motocrossactionmag.com/mxa-race-test-2022-ktm-150sx-two-stroke-…
No experience with smaller bore tbi bikes.
However i own a 24 250 and ridden 3 other 300s. I have no idea what everyone is complaining about. I'm assuming they just have not ridden them? Good fuel and clean filters. Pretty much it. Only added tool I have purchased is the power valve tool to reset after rebuild. No shade on carb bikes they rip too. I'm not sure I'd sway anyone from purchasing one.
The complaints are primarily with the 125
The 125s haven’t been very good, the larger displacement bikes seem to be much less problematic. Go look at any major amateur 125/schoolboy race in the last year and 90%+ of the riders on Austrian bikes are still riding the last generation carb bike.
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Just saw KTM now offers a power parts kit. Looks to be a cylinder, head insert, pipe, silencer, clutch spring, and ecu. Here’s what they advertise:
“The FACTORY RACING PERFORMANCE KIT intensifies your KTM 125 SX by delivering more power, less weight, and factory looks that let you stand out from the pack.”
Seems like it would make a big difference, but then they flash an image of a dyno chart that shows just a tiny bump at the very top of the rpm range and no gains anywhere else:
So they are admitting the stock mapping is conservative from the factory.
Not sure about the cylinder with better porting. Could do similar yourself I'm sure most of the gains are from the mapping in the different ecu.
Maybe they’re trying to get rid of excess inventory? I don’t see any other reason to include a cylinder in that kit.
Italians are already developing a carburetor conversion kit for the KTM/HUSQVARNA/GASGAS 125 TBI bikes
https://www.instagram.com/reel/DHiZbrDMlnj/?igsh=b3RwdTAyd3BwZXF4
They also sell a 150 kit for the 125 for a touch over a grand.
Truth! I drug out my '22 YZ250F after a year off of it. My STIC carb'd 200SX with YZ front end parked that No joy over hyped pig. Complete waste of money, these 250F'ers. My 300SX, when it ran, is just as easy to ride and is lighter.
I watched a Euro dyno test video of a plus 1.5k EU 125 kit. About the same power as a carb gen 125SX! Joke
Don't forget, the Austrian brands have reduced rev range, as to preserve the shite cranks. No point in them.
Here are some dyno runs to compare modded carb bike vs stock and get ecu 2023 125. 2024 saw some injector changes. I have not seen anyone say if they still dyno as inconsistent as the 2023s.
https://www.youtube.com/watch?v=WUh2fzTVA1Y
Man i bet that 200SX is sweet!!!!!
My 300SX needs that carb kit as well. That kit looks like there's no TPS for timing and ePV. That's unfortunate, but also simplified.
I'd like to retro my bike, bc the local dealer is stumped on getting a scan from my WMR re-flashed ECU. WMR says that's false. Not a good sign for today and for issues in the future. They said if I don't want the KTM update flash, then they would refund my scan fee. Would it be too hard to grab another bikes ECU or test meter the sensors?
I don’t think ktm carbed bikes ever had a tps.
Other brands used/ used them and the KTM ECU will need one for ePV and timing control.
I forgot about the ePV. Maybe GET could program something into their ecu. I assume a YZ250 carb would work. I think the Keihin has TPS.
The question is does the Keihin sensor format/signal translate to the ECU. Even the range of movement of the slide may be scaled differently than the KTM TPS.
Pit Row
Apparently the same kit can be used to convert bigger bikes to carburetor also
https://www.instagram.com/reel/DITGdmQowvF/?igsh=MTk0azN3ZjJmNDlwdQ==
I watched that a few days ago . At aprox 7.50 he explains it perfectly. Shift on time , that’s easy on my bike to shift on the high bubble b4 it goes flat then it still has great Rushing torque . With stock gearing I might drop a tooth to get a better lap time bike . To lessen the violent hit & take some quick surge away . Get more consistent lap times & more speed vs quick hit wheel spin clutching to keep the front wheel down.
I run STIC Super X carb, so minus the carb cost is gonna help on price. I still expect it to be mucho dinero 😞
I rode a 2025 Husqvarna tc 150 last night and feel the same way. Felt like a total dog. Took way too long to get to the high rpm's and the clutch didnt engage until it was almost all the way out. The bike was brand new with 2 hours on it. My old yz125's would kill this thing. Very disappointing
Did someone brick your ecu?
Interesting take. I’ve read that the new 150 is a ripper.
This. My impression of every TBI bike I've ridden. 125, 250 and 300. All slow revving, heavy dogs compared to a properly jetted carb equivalent. The slow, muted power only adds to the heavy feel from the bikes already weighing 10+ pounds more.
Ryan Morais won the 30+ pro class on one yesterday at GH.
In one of the interviews he said he was giving up power to the carb bikes. I'm also guessing that as a KTM employee his mapping is likely a little more dialed in than what the consumer gets.
I still haven’t thrown a leg over a 125,150 or 250, but I have over 375 hours on 4 different 300’s since 23 and they just keep getting better. My early model 23 had some bogs and minor issues that I eventually got totally fixed with a twisted map, $399 got the 23/24 bikes running great as I took the ecu from the 23 to the 24’s. My new 25 tc300 stock ecu is even better than the twisted map, it’s insane how good this bike runs. Hands down the best running big bore two stroke I’ve ever ridden. I have a Haeseker built 2022 TC125 right now, he did the entire motor, airbox and carb. The biggest difference aside from the increased pulling power was how insanely clean he got that 125 to run, that’s what the 25 300 tbi feels like. It has “professionally built race motor” clean jetting. And the best think is it feels like this everywhere, from my house in the fog and dense 50 degree fog to 90 at Hangtown.
No bricking. The dealer has given me a code that relates to a PV closed position issue. Hopefully an easy reset. I'm relieved that WMR's re-flash remains. The dealer initially said they must KTM update the ECU for their tool to read codes. Fortunately WMR(a KTM dealer) held their hand to fetch the code.
Yup, it was a unicorn find for me. It already had an upgraded frame, Showa fork and was a NOS low hrs project. Better still with YZ front end or '24 Ohlins cartridge/air hybrid front end.
LOL, got two thumbs down for talking smack on the YZ250F I guess. Sorry, not sorry. No joy for me on that porker. I need me some YAT!
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