2023 KTM SX300 Official Thread

Bruce372
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Bruce372 11/11/2022 2:57pm
11/11/2022 2:57pm
wr74 wrote:
Anyone ride the 250 vs the 300 back to back yet? I’m keen to get one, but on the fence which would suit me better for...
Anyone ride the 250 vs the 300 back to back yet?
I’m keen to get one, but on the fence which would suit me better for mainly moto.
soggy wrote:
If you like to rev 250. If your a lugger 300
You've ridden them both, 250 and 300 TBI bikes?
urbanlift707
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urbanlift707 11/11/2022 3:18pm
11/11/2022 3:18pm
Made it to the grocery store parking lot and swapped mufflers 🤣

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suby723
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suby723 11/12/2022 10:52am
11/12/2022 10:52am
Anyone ran into the fi flash 5-5-5? Just had it happen on mine. Only 1.4hrs.
1
urbanlift707
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urbanlift707 11/12/2022 4:07pm
11/12/2022 4:07pm
Finally got my first ride on her today. First and foremost, I absolutely love it, it’s such a good bike!! It’s crazy though with it being FI and having an electronic power valve it hardly feels any different than my 2021 300. This is a really good thing, that motor is absolutely amazing. The 23 has slightly less bottom end than my 21, I attribute this to the longer and much quieter Fmf 2.1 vs my pc shorty. So far with 2.5 hours on it, I’ve very pleased with the motor. The chassis difference was a much more noticeable change than the motor. I’m a huge fan of the feel of the new stiffer chassis, it’s feels way more precise, offers a great deal more front end traction and has me effortlessly grabbing insides that I couldn’t touch last week on the same track. It’s a little more nervous and can knife a little easier but once you take note of that, you can adjust your riding and it’s fine.
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Hammy_M
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Hammy_M 11/13/2022 8:34am
11/13/2022 8:34am
For those who've rode both the new 250 and 300, curious your thoughts on which one to choose. I was dead set on the 300sx because it sounded like it rode very similar to a 450...can lug it a little more, fairly smooth, etc. Not so snappy like the old two strokes. The more I read this forum, the more I wonder if that's the right call or if the 250sx may be better.

I'm old and slow... ride it Vet C class. Still learning and have basically no experience with 'old' two strokes. Just started riding a few years ago mostly to stay in shape for snowmobiling, but kind of fell in love with the sport and looking to devote a lot more time to it next year. I ride a 450 today and have been looking to get a new bike so I could turn my 450 into a permanent snowbike. Just like the idea of riding a two stroke so that's why I'm leaning this way vs another 450 or 350.
1
Bruce372
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Bruce372 11/13/2022 10:15am
11/13/2022 10:15am
suby723 wrote:
Anyone ran into the fi flash 5-5-5? Just had it happen on mine. Only 1.4hrs.
Look up highland cycle on youtube. There is another dude he knows had a similar problem I think?
lumpy790
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lumpy790 11/13/2022 10:29am
11/13/2022 10:29am
suby723 wrote:
Anyone ran into the fi flash 5-5-5? Just had it happen on mine. Only 1.4hrs.
Bruce372 wrote:
Look up highland cycle on youtube. There is another dude he knows had a similar problem I think?
Not sure what the code was but I have seen something about a code if you bumped the start button while riding.
1
suby723
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suby723 11/13/2022 10:58am
11/13/2022 10:58am
suby723 wrote:
Anyone ran into the fi flash 5-5-5? Just had it happen on mine. Only 1.4hrs.
Bruce372 wrote:
Look up highland cycle on youtube. There is another dude he knows had a similar problem I think?
lumpy790 wrote:
Not sure what the code was but I have seen something about a code if you bumped the start button while riding.
That's exactly what I did. I reset the ecu and it still came back.
lumpy790
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lumpy790 11/13/2022 10:59am
11/13/2022 10:59am
Bruce372 wrote:
Look up highland cycle on youtube. There is another dude he knows had a similar problem I think?
lumpy790 wrote:
Not sure what the code was but I have seen something about a code if you bumped the start button while riding.
suby723 wrote:
That's exactly what I did. I reset the ecu and it still came back.
Ok
OnTheCrossbar 11/13/2022 11:20am
11/13/2022 11:20am
Bruce372 wrote:
Look up highland cycle on youtube. There is another dude he knows had a similar problem I think?
lumpy790 wrote:
Not sure what the code was but I have seen something about a code if you bumped the start button while riding.
suby723 wrote:
That's exactly what I did. I reset the ecu and it still came back.
Do you mean that the dealer reset the ECU? Or did you just disconnect your battery?
suby723
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suby723 11/13/2022 11:21am
11/13/2022 11:21am
suby723 wrote:
Anyone ran into the fi flash 5-5-5? Just had it happen on mine. Only 1.4hrs.
Bruce372 wrote:
Look up highland cycle on youtube. There is another dude he knows had a similar problem I think?
Dude thanks for mentioning him. He's got a lot of great info on our 300's. I'm about to relocate the start switch to the left side I think.
1
WDSRCR
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WDSRCR 11/14/2022 5:50am
11/14/2022 5:50am
suby723 wrote:
Anyone ran into the fi flash 5-5-5? Just had it happen on mine. Only 1.4hrs.
Bruce372 wrote:
Look up highland cycle on youtube. There is another dude he knows had a similar problem I think?
suby723 wrote:
Dude thanks for mentioning him. He's got a lot of great info on our 300's. I'm about to relocate the start switch to the left side...
Dude thanks for mentioning him. He's got a lot of great info on our 300's. I'm about to relocate the start switch to the left side I think.
I am getting the Fi light on mine as well. Doesn't change the way the bike runs but is annoying to know it's there. I am 99% certain I didn't hit my start button since my light started while I was racing a Hare Scramble but, meh, it is what it is.

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urbanlift707
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urbanlift707 11/14/2022 12:11pm
11/14/2022 12:11pm
Nice debut race for the new 300, passed 8 450’s on it. Second day on it was the race and the more I ride it the more I like it vs my 21. However I’m liking it more because of the chassis, I’m definitely wanting a harder hit down low outta the motor so third picks up quicker in tight corners. For reference in this video that inside in the back I’m making all my passes on I’m in second gear, last weekend on my twisted development 300 I was able to hit those in third and it would pull it. I’m on the green map and even went to the vented number plate. It’s damn close though and aside from the very small but noticeable difference in roll on power I actually think it pulls harder than the built motor once they get to the meat of the power.
https://youtu.be/L383D-kHd0g
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WTF_M8
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WTF_M8 11/14/2022 12:29pm
11/14/2022 12:29pm
urbanlift707 wrote:
Nice debut race for the new 300, passed 8 450’s on it. Second day on it was the race and the more I ride it the...
Nice debut race for the new 300, passed 8 450’s on it. Second day on it was the race and the more I ride it the more I like it vs my 21. However I’m liking it more because of the chassis, I’m definitely wanting a harder hit down low outta the motor so third picks up quicker in tight corners. For reference in this video that inside in the back I’m making all my passes on I’m in second gear, last weekend on my twisted development 300 I was able to hit those in third and it would pull it. I’m on the green map and even went to the vented number plate. It’s damn close though and aside from the very small but noticeable difference in roll on power I actually think it pulls harder than the built motor once they get to the meat of the power.
https://youtu.be/L383D-kHd0g
KICKASS!!!

That looked fun!
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Sargebro387
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Sargebro387 11/14/2022 12:50pm
11/14/2022 12:50pm
Love my 23 350xcf but reading this thread has me wanting to trade it in for a 300xc..
WTF_M8
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WTF_M8 11/16/2022 7:18pm
11/16/2022 7:18pm
Had mine for 3 weeks. Still less than hour on it. I really hope it doesn't rain this weekend.
Chris99Flannery 11/16/2022 7:37pm
11/16/2022 7:37pm
urbanlift707 wrote:
Nice debut race for the new 300, passed 8 450’s on it. Second day on it was the race and the more I ride it the...
Nice debut race for the new 300, passed 8 450’s on it. Second day on it was the race and the more I ride it the more I like it vs my 21. However I’m liking it more because of the chassis, I’m definitely wanting a harder hit down low outta the motor so third picks up quicker in tight corners. For reference in this video that inside in the back I’m making all my passes on I’m in second gear, last weekend on my twisted development 300 I was able to hit those in third and it would pull it. I’m on the green map and even went to the vented number plate. It’s damn close though and aside from the very small but noticeable difference in roll on power I actually think it pulls harder than the built motor once they get to the meat of the power.
https://youtu.be/L383D-kHd0g
Fun to watch. You must have laughed everytime they went high outside..

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urbanlift707
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urbanlift707 11/16/2022 9:28pm
11/16/2022 9:28pm
Chris99Flannery wrote:
Fun to watch. You must have laughed everytime they went high outside..
Yea I don’t know why everyone kept going wide. It was way rougher on entry and exit too. Race was 9 laps and I’m a bad arm pump guy. I was hunting for any smooth line I could find!
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yz763
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yz763 11/18/2022 5:48am
11/18/2022 5:48am
Hammy_M wrote:
For those who've rode both the new 250 and 300, curious your thoughts on which one to choose. I was dead set on the 300sx because...
For those who've rode both the new 250 and 300, curious your thoughts on which one to choose. I was dead set on the 300sx because it sounded like it rode very similar to a 450...can lug it a little more, fairly smooth, etc. Not so snappy like the old two strokes. The more I read this forum, the more I wonder if that's the right call or if the 250sx may be better.

I'm old and slow... ride it Vet C class. Still learning and have basically no experience with 'old' two strokes. Just started riding a few years ago mostly to stay in shape for snowmobiling, but kind of fell in love with the sport and looking to devote a lot more time to it next year. I ride a 450 today and have been looking to get a new bike so I could turn my 450 into a permanent snowbike. Just like the idea of riding a two stroke so that's why I'm leaning this way vs another 450 or 350.
I initially had my deposit on a 250 but I could get the 300 sooner. I got the tre hundo. I rode the 250 and 300 back to back the day I picked it up from the dealer. At first, I was thinking…I should have stuck with the 250. The 250 revs and felt lighter than the 300. The 250 is more like the 250’s of old. However, I got to sweep ride our local hare scramble series this past Sunday and put 4.5 hours of motor time on the 300 in one day. The course was 13 miles of rooty, tight woods and some speedy pasture-cross. I am so happy I stayed with the 300. It’s got balls down low and cruises well at any rpm. When it gets up in the revs, it pulls pretty hard. Smooth but hard. I never once put it in the green mode as that seems to be a handful in the woods. I knew I would be sweeping practice, the morning race and the afternoon race so I was trying to conserve energy.
I haven’t checked the fork pressure or set the sag at all. I’m just riding it. I’ll worry about pressures and sag after I get this thing revalved for my weight and skill (210 pound 40 C-B rider in the woods). This bike is incredible. I have to remember that I don’t need to flick the clutch in the woods and that I should just ride it like a 350. For a vet C guy, the 300 has torque and feels easier to ride but the 250 is more fun and “engaging”.
1
sam hain
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sam hain 11/18/2022 6:48am
11/18/2022 6:48am
yz763 wrote:
I initially had my deposit on a 250 but I could get the 300 sooner. I got the tre hundo. I rode the 250 and 300...
I initially had my deposit on a 250 but I could get the 300 sooner. I got the tre hundo. I rode the 250 and 300 back to back the day I picked it up from the dealer. At first, I was thinking…I should have stuck with the 250. The 250 revs and felt lighter than the 300. The 250 is more like the 250’s of old. However, I got to sweep ride our local hare scramble series this past Sunday and put 4.5 hours of motor time on the 300 in one day. The course was 13 miles of rooty, tight woods and some speedy pasture-cross. I am so happy I stayed with the 300. It’s got balls down low and cruises well at any rpm. When it gets up in the revs, it pulls pretty hard. Smooth but hard. I never once put it in the green mode as that seems to be a handful in the woods. I knew I would be sweeping practice, the morning race and the afternoon race so I was trying to conserve energy.
I haven’t checked the fork pressure or set the sag at all. I’m just riding it. I’ll worry about pressures and sag after I get this thing revalved for my weight and skill (210 pound 40 C-B rider in the woods). This bike is incredible. I have to remember that I don’t need to flick the clutch in the woods and that I should just ride it like a 350. For a vet C guy, the 300 has torque and feels easier to ride but the 250 is more fun and “engaging”.
I'm the opposite of you, I'm always a 300 guy in the past but glad I got the 250. The quick revving motor and quickness of it was what I was looking for. My group lost about 1500 acres of mountain ST so I don't miss the 300 torque, I already told one of my buddies if we still had that property I'd got the 300. Now my riding is mostly national enduro's and HS's so the 250 fits my needs better. Glad you like your new bike, I don't see anyone going wrong with either cc.
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sam hain
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sam hain 11/18/2022 6:59am
11/18/2022 6:59am

For anyone looking for pipe guards for the stock pipe P3 has them, I ordered mine directly from P3.
This is one is called the max coverage, it comes all the way back to the frame.
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Bearuno
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Bearuno 11/18/2022 7:18am
11/18/2022 7:18am
suby723 wrote:
Dude thanks for mentioning him. He's got a lot of great info on our 300's. I'm about to relocate the start switch to the left side...
Dude thanks for mentioning him. He's got a lot of great info on our 300's. I'm about to relocate the start switch to the left side I think.
Could you let me / us know how many wires / plugs the combo kill / start switch has?

If possible, I'd like to fit one to my bike (not a KTM) , as an all in one switch. Having the Kill switch and Start button on my Brembo MCylinder upper clamps put them in a difficult place to get to. Though, here in OZ the switch is listed at around $154 AUD.
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Ob917
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Ob917 11/18/2022 8:10am
11/18/2022 8:10am
Any opinions on what fuel ratio works best? Just curious if there is any reason to try something besides 60:1.
1
yz763
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yz763 11/18/2022 8:36am
11/18/2022 8:36am
Ob917 wrote:
Any opinions on what fuel ratio works best? Just curious if there is any reason to try something besides 60:1.
I am running VP T-2 which is mixed at 40:1. The bike smokes a bit but runs just fine. I use this fuel in my YZ250 also so I'm not trying to get a third gas can at 60:1. It did load up a bit in the first hour or so of motor time but hasn't done it since.
SoCalMX70
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SoCalMX70 11/18/2022 8:45am
11/18/2022 8:45am
Ob917 wrote:
Any opinions on what fuel ratio works best? Just curious if there is any reason to try something besides 60:1.
yz763 wrote:
I am running VP T-2 which is mixed at 40:1. The bike smokes a bit but runs just fine. I use this fuel in my YZ250...
I am running VP T-2 which is mixed at 40:1. The bike smokes a bit but runs just fine. I use this fuel in my YZ250 also so I'm not trying to get a third gas can at 60:1. It did load up a bit in the first hour or so of motor time but hasn't done it since.
My personal view is these bikes would run better at 40:1 with a tune.

KTM has these setup for 60:1 in part because they have to, not necessarily because they want to.
OnTheCrossbar 11/18/2022 8:50am
11/18/2022 8:50am
Ob917 wrote:
Any opinions on what fuel ratio works best? Just curious if there is any reason to try something besides 60:1.
yz763 wrote:
I am running VP T-2 which is mixed at 40:1. The bike smokes a bit but runs just fine. I use this fuel in my YZ250...
I am running VP T-2 which is mixed at 40:1. The bike smokes a bit but runs just fine. I use this fuel in my YZ250 also so I'm not trying to get a third gas can at 60:1. It did load up a bit in the first hour or so of motor time but hasn't done it since.
SoCalMX70 wrote:
My personal view is these bikes would run better at 40:1 with a tune. KTM has these setup for 60:1 in part because they have to...
My personal view is these bikes would run better at 40:1 with a tune.

KTM has these setup for 60:1 in part because they have to, not necessarily because they want to.
Carbed KTM 250/300s have been 60:1 forever, not for emissions as they are closed corse bikes. There is no reason to run 40:1.
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917rider
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917rider 11/18/2022 8:58am
11/18/2022 8:58am
I’ve been using vp t-2 which is 40:1 . Bike runs perfect
PatH
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PatH 11/18/2022 9:06am
11/18/2022 9:06am
I ran 40-1 for the first tank just being a new motor, Mine now has 50-1 in it. At 40-1 it does load up when the engine is cold, but once warmed up its fine and doesn't. I cant speak for 60-1. 50-1 doesn't load up when cold nearly as bad.
1
mxrider118 11/18/2022 9:23am
11/18/2022 9:23am
I feel like running the 60:1 it ran very lean with the motorex. I was wondering about 50:1 like previous version of my 300 big bore
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