Kawasaki KX327

9/19/2026 8:02am
hellion wrote:
This is off the OP’s topic but it’s the first time I’ve seen it mentioned and I’m interested.  I had a KTM 200SX. The stock pipe...

This is off the OP’s topic but it’s the first time I’ve seen it mentioned and I’m interested.  I had a KTM 200SX. The stock pipe was great and the only aftermarket pipe that was close was Doma.  Eventually you had a hard time finding either.  A friend that worked for KTM USA gave me a pipe that measured exactly as a stock 200SX pipe in every way, except it was made of a thicker gauge of steel.  It made the bike run like a turf.  I believed there had to be a restrictor built in and even cut the pipe in half to look.  There was not.  The only difference was gauge.  I’d love to know why this had such a huge effect on power…….

Yes, the gauge (thickness) of a two-stroke pipe significantly changes how the system experiences and manages resonance, but it is crucial to separate internal gas resonance from mechanical material resonance.
A thinner metal wall will experience much more mechanical resonance and vibration than a thicker wall, acting almost like a drum. However, this behaves differently depending on the context: [1]
 
1. Mechanical Pipe Resonance (The Wall Itself)
  • Thinner Walls: A thinner gauge (e.g., 22-gauge or 0.6mm to 0.8mm steel) has less mass and stiffness. The intense pressure waves traveling inside a two-stroke expansion chamber easily flex and vibrate the metal. This amplifies higher-frequency harmonics, creating that iconic, crisp "ring-a-ding" or "tinny" metallic rasp associated with factory race bikes.

     
     

    [1, 2, 3, 4, 5, 6]

  • Thicker Walls: A thicker gauge (e.g., 18-gauge or 1.2mm steel) adds structural rigidity and mass, which naturally damps these mechanical vibrations. It absorbs the engine's natural acoustics, yielding a deeper, more muffled sound. [1, 2, 3, 4]

    My layman’s terms weren’t going to cut this explanation. 
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yak651
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9/19/2026 9:00am
MoogenKen wrote:

Really liked the idea of this bike, until I saw no kicker, electric start, battery, and fuel injection. Yuck. 🤮 

Marty1028 wrote:

Old Man Shouts At Cloud GIFs | Tenor

MoogenKen wrote:

Yes, I was born before motocross became a sport full of pussies, like you. 

Get a load of this guy 🙄

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9/19/2026 9:02am
Marty1028 wrote:

Old Man Shouts At Cloud GIFs | Tenor

MoogenKen wrote:

Yes, I was born before motocross became a sport full of pussies, like you. 

yak651 wrote:

Get a load of this guy 🙄

Speaking of pussies, here you are. 

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9/19/2026 9:02am
MoogenKen wrote:

Yes, I was born before motocross became a sport full of pussies, like you. 

Why the name calling ? What qualifies him as a Pussy ? 

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The Shop

9/19/2026 9:03am
MoogenKen wrote:

Yes, I was born before motocross became a sport full of pussies, like you. 

Langhammx wrote:

Why the name calling ? What qualifies him as a Pussy ? 

I’m pretty sure he fired the first shot. 

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yak651
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9/19/2026 9:07am
MoogenKen wrote:

Yes, I was born before motocross became a sport full of pussies, like you. 

yak651 wrote:

Get a load of this guy 🙄

MoogenKen wrote:

Speaking of pussies, here you are. 

Ow you got me good, hurt me right in the feels…I’ll just go riding to get over, you should try it sometime so you aren’t so miserable 

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9/19/2026 9:09am
yak651 wrote:
Ow you got me good, hurt me right in the feels…I’ll just go riding to get over, you should try it sometime so you aren’t so...

Ow you got me good, hurt me right in the feels…I’ll just go riding to get over, you should try it sometime so you aren’t so miserable 

Don’t act like you know me, little man. 

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yak651
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9/19/2026 9:10am
MoogenKen wrote:

Yes, I was born before motocross became a sport full of pussies, like you. 

Langhammx wrote:

Why the name calling ? What qualifies him as a Pussy ? 

MoogenKen wrote:

I’m pretty sure he fired the first shot. 

So implying that you are against change is taking a shot? Got it.

IMG 5588 3.jpeg?VersionId=UuO6JmaS
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yak651
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9/19/2026 9:11am
yak651 wrote:
Ow you got me good, hurt me right in the feels…I’ll just go riding to get over, you should try it sometime so you aren’t so...

Ow you got me good, hurt me right in the feels…I’ll just go riding to get over, you should try it sometime so you aren’t so miserable 

MoogenKen wrote:

Don’t act like you know me, little man. 

😂

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9/19/2026 9:12am
Langhammx wrote:

Why the name calling ? What qualifies him as a Pussy ? 

MoogenKen wrote:

I’m pretty sure he fired the first shot. 

yak651 wrote:
So implying that you are against change is taking a shot? Got it.

So implying that you are against change is taking a shot? Got it.

IMG 5588 3.jpeg?VersionId=UuO6JmaS

Are you really this stupid? Never mind, I already know the answer.

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Kenny Banyan
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9/19/2026 9:14am Edited Date/Time 9/22/2026 2:31pm
MoogenKen wrote:

Really liked the idea of this bike, until I saw no kicker, electric start, battery, and fuel injection. Yuck. 🤮 

woodsryder wrote:

It's pretty much a green KTM with an aluminum frame and KYB suspension.

So it’s not “pretty much like the KTM” then….😂

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Kenny Banyan
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9/19/2026 9:18am
TheMilkman wrote:

I am so ready for the master class on exhaust wall thickness and how it changes performance from an expert here. 

PNWMXer wrote:

Great class, but you have to take the “how 10mm lower suspension affects the peg/seat/bar triangle” as a prerequisite…

I was relieved to find out it has a Johnson Rod.💯

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9/19/2026 9:26am
yak651 wrote:

😂

Stop laughing, you just ruined this guys whole day. Lol 

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9/19/2026 9:33am Edited Date/Time 9/19/2026 9:48am
yak651 wrote:

😂

Langhammx wrote:

Stop laughing, you just ruined this guys whole day. Lol 

You’re giving “Gingersnap Parker”, waaay too much credit! Lmmfao 🤠

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731chopper
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9/19/2026 3:55pm

This is why we can’t have nice things. 

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9/20/2026 8:40am Edited Date/Time 9/20/2026 8:40am

It looks and sounds really good in person. IMG 2193 4

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bodycast
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9/20/2026 9:18am

Thread got lame real fast.

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bosswool2800
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9/20/2026 12:44pm Edited Date/Time 9/20/2026 12:45pm

So, back to the pipe, I’m sure Pro Curcuit, FMF, and the others are already getting dimensions and getting a pipe ready for this one. Like I say, I think this bike is gonna do well with mods - ecu, pipe, head, etc is gonna unlock this thing. 

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sandman768
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9/20/2026 1:21pm
So, back to the pipe, I’m sure Pro Curcuit, FMF, and the others are already getting dimensions and getting a pipe ready for this one. Like...

So, back to the pipe, I’m sure Pro Curcuit, FMF, and the others are already getting dimensions and getting a pipe ready for this one. Like I say, I think this bike is gonna do well with mods - ecu, pipe, head, etc is gonna unlock this thing. 

If it’s anything close to the Ktm300sx/Xc…most of the tuning/ improvements will be within the ECU…they will probably be pretty conservative stock….I look forward to the testing/ reviews of the production bike, the more 2 strokes the better! 

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bosswool2800
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9/20/2026 1:36pm
sandman768 wrote:
If it’s anything close to the Ktm300sx/Xc…most of the tuning/ improvements will be within the ECU…they will probably be pretty conservative stock….I look forward to the...

If it’s anything close to the Ktm300sx/Xc…most of the tuning/ improvements will be within the ECU…they will probably be pretty conservative stock….I look forward to the testing/ reviews of the production bike, the more 2 strokes the better! 

Yep, the bike is still a 300+ 2-stroke. It will have more than enough power.

3
bodycast
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9/20/2026 3:28pm
So, back to the pipe, I’m sure Pro Curcuit, FMF, and the others are already getting dimensions and getting a pipe ready for this one. Like...

So, back to the pipe, I’m sure Pro Curcuit, FMF, and the others are already getting dimensions and getting a pipe ready for this one. Like I say, I think this bike is gonna do well with mods - ecu, pipe, head, etc is gonna unlock this thing. 

sandman768 wrote:
If it’s anything close to the Ktm300sx/Xc…most of the tuning/ improvements will be within the ECU…they will probably be pretty conservative stock….I look forward to the...

If it’s anything close to the Ktm300sx/Xc…most of the tuning/ improvements will be within the ECU…they will probably be pretty conservative stock….I look forward to the testing/ reviews of the production bike, the more 2 strokes the better! 

Right.  They have to produce these bikes for the masses.  I have rode 300 amd 250 sx tbi bikes that have had some work done and they go from 0 to oh shit real fast.   Surprising enough the 250 that had some tuning among other things was a absolute missile.

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PRM31
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9/20/2026 3:53pm

Anyone here actually raced a 350/450 4t and a 300 2t and can offer a comparison? 

agn5008
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9/20/2026 4:14pm
PRM31 wrote:

Anyone here actually raced a 350/450 4t and a 300 2t and can offer a comparison? 

My last 3 bikes have been a 2022 KTM 300 XC, 2024 YZ 250x and currently a 2025 Beta 350 RR race edition (4 stroke). 

I fight for wins in Vet A offroad and still practice moto quite often. I can probably offer some pretty good comparisons between the 3. 

The KTM 300 is an excellent all around bike minus the suspension. I spent more money trying to get comfortable on the suspension than I’d like to admit. No matter what, I could never get it right. The bike was very good on hard enduro terrain, solid on MX, and good in a typical HS race. 

The YZ 250X was a blast to ride, the suspension is really good out of the box, and it’s by far the least amount of maintenance among the 3. You just ride it and beat the piss out of it and it’s always going to run great. It was not very good on hard enduro, solid on MX and very good on typical HS terrain. 

The beta 350 four stroke is an amazing bike. It’s very good on hard enduro, very good on MX, and very good on typical HS terrain. It does absolutely everything really well. It’s by far my favorite bike I’ve ever had (been racing for about 34 years and have had probably 30+ new bikes during that time) 


If I had to rate them by type of riding I do it would go like this: 

Hard enduro:

  1. KTM 300
  2. Beta 350
  3. YZ 250x

    Motocross

    1. Beta 350

    2. YZ 250x

    3. KTM 300

    Typical HS terrain

    1. Beta 350

    2. YZ 250x 

    3. KTM 300


    For me, I love the Beta 350 because I like to ride a little bit of everything and it does everything really well. I ride with guys who all they do is hard enduro, so obviously they go for the KTM/Husky/GG, beta, sherco 300’s. I also ride with guys who are strictly moto, so they go for the moto bikes. It’s all what you ride and what you’re looking for out of a bike. I don’t ever knock any of these bikes because they are all fantastic machines and are totally capable of doing more than most of us can ever imagine doing on a bike. 

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crmx105
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9/20/2026 6:12pm

👍👍👍to Kawasaki for doing this!!!!!!!!!!!

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Leeham
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9/20/2026 6:37pm
MoogenKen wrote:

You’re giving “Gingersnap Parker”, waaay too much credit! Lmmfao 🤠

Your life must be awful lmao

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urbanlift707
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9/20/2026 8:17pm
PRM31 wrote:

Anyone here actually raced a 350/450 4t and a 300 2t and can offer a comparison? 

I raced my yz450 and yz250 and now my crf450 and the yz250 on the same day all the time. What do ya want to know? Lap times vary from track to track, I’m never faster on the smoker but more often than not I legit run the exact same times. Certain tracks I can be a few second faster on the 450. 

This past day in the dirt I race them back to back so the track was pretty much the same and over a 5:30 second lap I was within .25 second best lap to best lap. 

450 is way easier to race, 250 is way more fun to race. 

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9/20/2026 9:56pm
MoogenKen wrote:

Really liked the idea of this bike, until I saw no kicker, electric start, battery, and fuel injection. Yuck. 🤮 

Marty1028 wrote:

Old Man Shouts At Cloud GIFs | Tenor

MoogenKen wrote:

Yes, I was born before motocross became a sport full of pussies, like you. 

Says the guy getting riled up over a picture on the internet. Go eat some more lead paint chips grandpa 😆🤦‍♂️

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PRM31
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9/22/2026 5:07pm
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Fearnot
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9/22/2026 6:31pm
PRM31 wrote:

Love it sounds great, he said it's slower than his 450 but that's to be expected a full on mod 400cc single 2t is pushing high 60's to get into that sphere. Happier with the bike every video I see of it.

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