2023 KTM SX300 Official Thread

240NEKDUD wrote:

Long time lurker and first-time poster. My boy and I are picking up a new 250sx and 300sx in a few weeks. This is a big...

Long time lurker and first-time poster. My boy and I are picking up a new 250sx and 300sx in a few weeks. This is a big move for us. First time KTM(moving from yamaha) and moving to the 2 strokes. These new 2 stroke just look soo good.
For us, he can race the 250sx in the 250class and won't have the expense of a built 250F race engine. Any way enough with the excitement. As noted, we have been 4t for years and always used Amsoil for all lubricants. What is everyone's suggestion 2t mix and pump gas for these new bikes?

sam hain wrote:

[img]https://p.vitalmx.com/photos/forums/2022/11/03/575546/s1200_250xc1.jpg[/img] Broke my 250xc in yesterday, IDK how many new KTM's I've had since 2005 (first one) but I'm gonna guess in the upper teen's low...

Broke my 250xc in yesterday, IDK how many new KTM's I've had since 2005 (first one) but I'm gonna guess in the upper teen's low 20's. This bike is by far the best stock suspension I've ever ridden. In single track the bike feels like a bicycle, feels very narrow and turns with ease. The motor is amazing, no bog, torquey, fan the clutch and its snaps to life. It's also very smooth if you leave the clutch alone and let the torque work. I'm not an mx guy anymore, but these TBi 2stk will be a game changer for enduro and HS guys.

2-slow MX wrote:

Just picked my son up the new 125. I'm seeing tons of guys getting their 300's but very few have the 125 yet. Just wondering if...

Just picked my son up the new 125. I'm seeing tons of guys getting their 300's but very few have the 125 yet. Just wondering if anyone is noticing a bog or cutting out at the top of the revs on the bigger bores? Obviously they're not revved out quite as much as the 125's but worth asking.

The 125 is awesome in every way except it cuts out bad at the top of the rev range (to a point it's unsafe to hit jumps). Seemed like a powervalve issue at first. All the way from idle thru mid range it sounds great, then right as you should be getting into the powerband she just signs off and starts sputtering. Tried to reset the powervalve limits using the little "wake up" tool that came with it. That seemed to clean it up a tad but it's still there.

Have a call in to KTM already but was just wondering if anyone else has experienced anything like it on the new bikes.

Spooner wrote:

Yeah I ran that muffler on my 20 and loved it but I ran the fatty to get more top end. I’d be interested to see...

Yeah I ran that muffler on my 20 and loved it but I ran the fatty to get more top end. I’d be interested to see how the gnarly performs but I doubt the bike needs more bottom haha. Plus I like the factory fatty because looking cool trumps all lol. Post up the muffler when you get it on!

Sr_Vet_Rider wrote:

[img]https://p.vitalmx.com/photos/forums/2022/10/26/574633/s1200_BA99517A_95F5_4624_A3AF_67601C9442E0.jpg[/img] [img]https://p.vitalmx.com/photos/forums/2022/10/26/574632/s1200_DD32FF03_1D36_4946_82EA_A2E7AC1259E1.jpg[/img] [img]https://p.vitalmx.com/photos/forums/2022/10/26/574636/s1200_A463883D_73C8_4363_B0FB_FFE475136593.jpg[/img] [img]https://p.vitalmx.com/photos/forums/2022/10/26/574634/s1200_2AEC99BA_A26B_4640_B66A_C4C6C8799751.jpg[/img] [img]https://p.vitalmx.com/photos/forums/2022/10/26/574635/s1200_8CE29CE7_11AA_4CCE_AB58_66900D58DE66.jpg[/img]

Sr_Vet_Rider wrote:

Picking mine up Tuesday, will ride it next weekend

stonerb wrote:

do you happen to know if the ti silencer fits the 250s? it just shows up in the Ktm power parts for the 300, but I...

do you happen to know if the ti silencer fits the 250s? it just shows up in the Ktm power parts for the 300, but I thought all the pipes would be interchangeable between the 250s and 300s.

Sr_Vet_Rider wrote:

Yes they are. 100% the same pipe/ silencer

FahQ wrote:

Are these bikes specing a special plug?

Sr_Vet_Rider wrote:

Picking mine up Tuesday, will ride it next weekend

XC706 wrote:

Your bike is looking trick Shawn in Dirt Bikes Weekly Feed.

FahQ wrote:

Are these bikes specing a special plug?

Sr_Vet_Rider wrote:

No
old school
B8ES, I think

Fouled Plug wrote:

Beauty new ride, congrats! How is the suspension on rock and roots? Have you been on any harsh trails with it yet?

sam hain wrote:

I rode it Wed on some single and double track trails in northwest GA, had a good mix of roots, rocks and small drop offs. Suspension...

I rode it Wed on some single and double track trails in northwest GA, had a good mix of roots, rocks and small drop offs. Suspension felt good, I'm a vetB guy 215lbs, I put a 48 spring on the rear 134psi in the forks to start the day. Came back after about 7 miles and checked sag, I was at 100mm, dropped it 105mm and raised fork psi to 137. That ended up being the wrong thing to do for me, forks were a little too stiff for my liking after dropping the rear. I've got an enduro Sunday and I'll drop the fork psi back down to 134. I think for now I'm leaving all the clickers alone until the suspension gets fully broken in. Right now I've got 1.6hrs on the bike. My only complaint with the bike is the seat, its hard as a rock. I'll either replace it with a guts soft or the hardparts comfort seat soon.

OnTheCrossbar wrote:

Picked up mine today, all the way west in Canada. [img]https://p.vitalmx.com/photos/forums/2022/11/03/575591/s1200_74228DC9_41C0_468F_84DE_D601CEBF4920.jpg[/img] [img]https://p.vitalmx.com/photos/forums/2022/11/03/575590/s1200_42E811D9_C107_4E97_8329_D386FD355C2A.jpg[/img]

Picked up mine today, all the way west in Canada.

sam hain wrote:

I rode it Wed on some single and double track trails in northwest GA, had a good mix of roots, rocks and small drop offs. Suspension...

I rode it Wed on some single and double track trails in northwest GA, had a good mix of roots, rocks and small drop offs. Suspension felt good, I'm a vetB guy 215lbs, I put a 48 spring on the rear 134psi in the forks to start the day. Came back after about 7 miles and checked sag, I was at 100mm, dropped it 105mm and raised fork psi to 137. That ended up being the wrong thing to do for me, forks were a little too stiff for my liking after dropping the rear. I've got an enduro Sunday and I'll drop the fork psi back down to 134. I think for now I'm leaving all the clickers alone until the suspension gets fully broken in. Right now I've got 1.6hrs on the bike. My only complaint with the bike is the seat, its hard as a rock. I'll either replace it with a guts soft or the hardparts comfort seat soon.

sam hain wrote:

I rode it Wed on some single and double track trails in northwest GA, had a good mix of roots, rocks and small drop offs. Suspension...

I rode it Wed on some single and double track trails in northwest GA, had a good mix of roots, rocks and small drop offs. Suspension felt good, I'm a vetB guy 215lbs, I put a 48 spring on the rear 134psi in the forks to start the day. Came back after about 7 miles and checked sag, I was at 100mm, dropped it 105mm and raised fork psi to 137. That ended up being the wrong thing to do for me, forks were a little too stiff for my liking after dropping the rear. I've got an enduro Sunday and I'll drop the fork psi back down to 134. I think for now I'm leaving all the clickers alone until the suspension gets fully broken in. Right now I've got 1.6hrs on the bike. My only complaint with the bike is the seat, its hard as a rock. I'll either replace it with a guts soft or the hardparts comfort seat soon.

yz763 wrote:

I get to pick up my 300xc tonight. The seat on my 350sx is awesome! It felt hard as a rock at first but I rode...

I get to pick up my 300xc tonight. The seat on my 350sx is awesome! It felt hard as a rock at first but I rode a 2 hour hare scramble and it was actually pretty comfy. The stock suspension was all over the place for me on the 350 so I swapped in the KYB kit. I’m really hoping I can make this air stuff work for the woods because I’m not a big fan of having to buy another set of KYB internals.

sam hain wrote:

I remember you posting that 250 and me telling you to tell him to piss off lol. My dealer was only allocated one 250, but got...

I remember you posting that 250 and me telling you to tell him to piss off lol. My dealer was only allocated one 250, but got three 300's. I got his only 250 and I couldn't be happier. Good luck with the new bike, they are sweet. I'll be at gobbler getter Sunday having a ball I hope.

sam hain wrote:

I remember you posting that 250 and me telling you to tell him to piss off lol. My dealer was only allocated one 250, but got...

I remember you posting that 250 and me telling you to tell him to piss off lol. My dealer was only allocated one 250, but got three 300's. I got his only 250 and I couldn't be happier. Good luck with the new bike, they are sweet. I'll be at gobbler getter Sunday having a ball I hope.

wrc777 wrote:

I saw you posted earlier that this is the best out of the box ktm suspension yet. Have you ridden a 21-22 stock tpi bike. I...

I saw you posted earlier that this is the best out of the box ktm suspension yet. Have you ridden a 21-22 stock tpi bike. I had one and thought it was too soft. I was wondering if they have gone stiffer for the ‘23 more like the Japanese xc bikes are.

FahQ wrote:

Are these bikes specing a special plug?

Sr_Vet_Rider wrote:

No
old school
B8ES, I think

Dirtbikeking164 wrote:

[img]https://p.vitalmx.com/photos/forums/2022/11/02/575436/s1200_FDD14CD6_6367_42EC_AA87_179055C9800E.jpg[/img] Picked up my XC last week, thing is nuts

Picked up my XC last week, thing is nuts

8tensolutions wrote:

Congrats! Are you riding slow speed technical single track at all? Curious to your thoughts on the XC model for the slower stuff. I am considering...

Congrats! Are you riding slow speed technical single track at all? Curious to your thoughts on the XC model for the slower stuff. I am considering the XC, but like tighter stuff too.

lumpy790 wrote:

In my experience in the MC industry the ES is a cheap junk plug that will foul easily. Testing my memory but I think it was...

In my experience in the MC industry the ES is a cheap junk plug that will foul easily. Testing my memory but I think it was a BR8EGV that I ran. Wasn't it by running a Non R Resistor plug would messed with the ignition.

lumpy790 wrote:

In my experience in the MC industry the ES is a cheap junk plug that will foul easily. Testing my memory but I think it was...

In my experience in the MC industry the ES is a cheap junk plug that will foul easily. Testing my memory but I think it was a BR8EGV that I ran. Wasn't it by running a Non R Resistor plug would messed with the ignition.

Sr_Vet_Rider wrote:

BR8EV was the upgrade plug for the BR8ES. I remember the BR8EGV, I believe that one was a newer bike stock plug, possibly relating to the...

BR8EV was the upgrade plug for the BR8ES.
I remember the BR8EGV, I believe that one was a newer bike stock plug, possibly relating to the ignition issues you speak of.

The BR8ES plug is inexpensive, but I have never had one in a FI bike, but they did seem to foul up with improperly jetted 2-strokes from the late 70’s- early 80’s.
I’d think KTM put them to the test and had no issues, or the bikes would require another $30 spark plug.
I’d rather pay more and not think about it.