KDXRIDER.NET

bummer if they ruin the simplicity of a 2stroke motor and make it too complicated for a common guy with common tools to work on.

Hopefully someone comes out with quality kits to simplify/override/delete the unnecessary emissions stuff.

Instead of a half electronic half combustion bike, I might just go the full e-moto path.

And the cost and maintenance advantage is now gone. It's sounds really interesting but I'll believe it when I see it. Fuel injected for sure, maybe direct injection like the emission friendly rotax/ski-doo two strokes, but everything else just adds more complexity and cost that I don't think the consumer would buy into IMHO. But I'm certainly interested to see what they do!

I think the forced induction stuff may be for a street bike but maybe I'm wrong. As big as Kawi is, they would probably have to do something like that if they're gonna put a 2 stroke on the road but not sure about offroad bikes. I think the only reason the Euro guys can still bring a road legal 2T to the states is because of volume but I'm no expert on this stuff.

Well.... Perhaps it will be called a KDX300R, if the name KX300X is already taken by a 4-stroke????
Unless, since it's reportedly a 327cc counterbalanced 2-stroke, they call it the KX330X or KX350X?

Is the KX300X replacing the KX250X? Or is it a more serious woods bike vs the KX250X being a GNCC type enduro race bike, & the KLX300 being basically an entry level hefty full size trail bike 4-stroke woods tractor?
With a headlight, I'd imagine it's meant to be a more serious woods / enduro bike with more torque and smoother power delivery than a 250 enduro race oriented 4-stroke.



The social media comments on FB & the 'gram are a long barrage of demands for a 300cc 2-stroke

It's interesting that while 350cc is typically the in-between 4-stroke size, at least with KTM/Husqvarna/Gas Gas, & 390cc with Beta, that Kawasaki gas released a 300cc 4-stroke woods bike. Honda I believe aldo has a 300cc 4-stroke CRF dual sport or woods bike, however...

Honda seems, historically, the least concerned out of the Japanese big 4 to give any R&D or market share to the 2-stroke efforts, however.

Upon deeper inspection, none of the Kawasaki websites, even both of the European websites, show a KX300X model.... Yet...?

From doing a bit of deeper searching, I see some references to some bikes badged as KX300X that are done AFTER leaving the Kawasaki factory, using an Athena big bore kit... So perhaps that is what is pictured here. Unfortunately AS3 Performance gave no context or further information / clarification in their post!


EDIT -
Ahhhh...
I saw the KL Service logo on the shroud graphics, which made searching a lot easier. Apparently these are a European-only offering that is modified by Kawasaki's European Union importer, KL Service, by adding full lighting, license plate holder, and the Athena 300 Big bore kit, and I believe then sold through Kawasaki dealers.

This would be similar to conversion of the road legal Australian KDX200J models, where they never received the road legal KDX220SR, but instead, sold official Kawasaki "KDX200H" models which were modified upon arriving in Australia to be KDX200J road legal premix two strokes I believe, with brake light tail light turn signals headlight horn battery etc, but not being an oil injection fully Japanese built stock KDX220SR street legal model, instead, modified after exporting out of Japan, in the destination country, prior to arrival at the dealerships...

https://getdirt.it/en/dirtest-kawasaki- ... l-service/

https://athena.industries/en/case-histo ... aki-kx300x

KL made some cool conversions around 15 or 20 years ago with the two strokes. Look those up if you can find them.

Before I picked up my 220, I was gonna wait it out to see what they release, but nothing was announced for '26, so I pulled the trigger. Hopefully we'll get more info soon.

Money on the announcement being at Supercross Opener @ Anaheim 1? At this point, that's my bet. But keeping people waiting a full year is kind of a **** move :)

Kawibunga wrote: 12:13 pm Dec 08 2025 Money on the announcement being at Supercross Opener @ Anaheim 1? At this point, that's my bet. But keeping people waiting a full year is kind of a **** move :)

The idea of some kind of substantial announcement @ Anaheim 1 looks like a safe bet, my connections are expecting them to hit late spring (but they are just cautiously optimistic).
Amazing how tight Kawasaki is holding this, it must be really big.

MoonStomper wrote: 11:28 am Dec 20 2025

Kawibunga wrote: 12:13 pm Dec 08 2025 Money on the announcement being at Supercross Opener @ Anaheim 1? At this point, that's my bet. But keeping people waiting a full year is kind of a **** move :)

The idea of some kind of substantial announcement @ Anaheim 1 looks like a safe bet, my connections are expecting them to hit late spring (but they are just cautiously optimistic).
Amazing how tight Kawasaki is holding this, it must be really big.

Let's hope thats the case. Its been a full year with nothing.

More 2nd hand / 3rd hand talk on the new Kawasaki 2-strokes:


"Kawasaki already have several of them here. They’ve been here since June. Kawasaki HW in Foothills Ranch has a few and Pro Circuit has one.
They’ll most likely announce it during Anaheim 1 to coincide with the AIMExpo which for the first time will be held in conjunction with A1 at the Anaheim Convention Center.
It was first rumored to be announced at the EICMA in Milan, but was pushed back for the better opportunity of announcing st A1.
For big companies like this, timing and coordinating the release properly can have the same effect as dropping 10’s of millions on marketing so it is very crucial how and when they do it.
They are already being produced. There’s 3 of them in the states already and they’ve been testing them since June. KX 300’s. They’ll be available at the end of January, beginning of February.
A KX 125-150 will be not too far after

I live in the middle of the motocross industry and own a company that is heavily involved in it. I’m just far enough away from the sources that I don’t have to sign any NDA’s.
Btw, they also have a new KXF 250 Pro Circuit Factory Edition that will be sold like the SR 450’s."



That's exciting to hear that they will be considering releasing a 150 variant of the 125 that they allegedly will be releasing perhaps by the end of 2026.... With all these new revolutionary cutting Edge 2-stroke technology patents that they have filed recently, I would expect that a 150 Woods version would be every bit as powerful as our 1995-2006 KDX 200 versions, if not faster.... It's the torque of the KDX 220 and Beta 200RR that I, personally, would really be after though, combined with the lighter weight reciprocating mass of a 200cc engine and a matching more compact nimble agile chassis, the things that make the KDX 200 and KX 125 as well as the beta 200 and the current YZ 2-strokes incredibly fun bikes that they are.

I was very sad to see the recent Cody Webb announcement that he would be running the new YZ250FX bikes exclusively this year, and is abandoning the YZ250X platform since Yamaha had just come out with the new four-stroke platform and had not given any significant updates to the two stroke....

The takeaway from this was that while he absolutely thought the YZ250X was perhaps the most fun bike he's ever ridden, Yamaha had not put enough development into it in recent years like they did the four-stroke version in a completely new chassis and new engine characteristics, the bike was always a compromise on a professional racing level.
He could make it do Hard Enduro really well, or he could make it do really well in the wide open sections that some race courses have, but he couldn't do both... He was getting closer when he began using the Athena Big Bore kit, but unfortunately he was out of patience and it did not test out well as he realized later that he did not have the correct ECU tune ignition curve settings to match the bigger bore, but at that point he was out of time and decided that his best move to stay competitive and not waste endless time doing his own virtually unsupported research and development (which Yamaha in my opinion should have been doing at great lengths during the entirety of 2025), it was too little too late for him.
Also, the lack of a wide ratio 6-speed gearbox on the YZ250X I feel was another big detractor. Perhaps a bike like this revolutionary new 327cc fuel injected counterbalanced 2-stroke engine can do just fine with a 5-speed gearbox, a 250cc 2T engine on a professional level up against 300cc 2T engines really needs some additional boost in the form of a wide ratio 6-speed if it's going to be competitive against 300cc counterbalance two strokes....


I really hope that they have left room on this 125 engine prototype that allegedly May be released as a 150 as well, in order to go up to a 66 mm piston or whatever it would take to make it a 200 class bike.... The reciprocating mass of a piston and crankshaft on a 200 is absolutely perfect, it doesn't add too much reciprocating mass for added gyroscopic effect that hampers handling like the big 300 bikes, did it delivers more torque than a 125 or 150 can.

If this new Kawasaki 2 stroke design really works out well, I feel this engine could absolutely dominate as long as Kawasaki doesn't make too many missteps in other places. A lighting stator coil and a larger enduro size fuel tank from the factory would be nice. Hopefully they will learn from the mistakes of the YZ250X in those areas having a tiny Motocross fuel tank and no lighting provisions on an enduro bike...
A 200cc version might not be the top choice of top competitive professional hard enduro racers, but it absolutely is going to be the most well-rounded all around best recreational and amateur race competitive size particularly for Woods riding in the Eastern Appalachian USA and Pacific Northwest as well as mountainous regions.

If Kawasaki announces a new 2 stroke, especially a 150, That will most definitely be my next bike. Fingers crossed for late Jan/Feb! I would love to see a 200 / 150 bored to 200!
Thanks for the update, Chuck!