Two-Stroke Showdown: KTM 300SX vs. Yamaha YZ300

When we heard that Jaime from Twisted Development was in the process of building 2 #twostroke 300cc project bikes, we knew we had to see them in person. Well, here they are! Jaime took a bone stock 2021 KTM 250SX and a 2022 Yamaha YZ250 two-stroke and dropped in a 300cc kit into both. We took both bikes and held multiple days of testing with head-to-head action to see which bike came out on top in this Two-Stroke Showdown. Turn your volume up and tune in to get your #twostroketuesday fix this week.

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[mav]

So cool. I raced my Dads modded 300sx in 2008 in Open B, and that bike was so insanely fast. Shredded 450's all day before it shook my arms off. Loved every second of it.

[jacobcarolan]

Both such badass bikes. I couldn’t pick a favorite I’m just glad the two stroke hasn’t gone the way of the dinosaurs yet!

[jetdr]

YZ's have a very distinct sound!! best of all 2 smokers...

[mikevidovich]

Great job guys, really love these builds / test / compare projects. I have been motoing, motocross and Offroad ride-race since 1979 and still can't get enough. current quiver : 150, 200, 300, 380 2T and 250F (want 300F build), 450F, 570F. Really love them all and fun and challenging to figure out how to best ride them in any given environment. This is what keeps me and my family in the sport... Keep it up... Thank You.

[mikebrown]

Got damn! Cant get much better than this! AMA and FIM watch and learn. Give them a fair matchup to the 4 strokes and racing will be so much more exciting again. Never forget the 80-90s and the early 2000s!

[ianmangham]

They sure are truly works of art these modern machines with insanely plush suspension 😮

[happyg.]

I have a 99 YZ250 with a big bore kit. I just turned 60, it is so fun, you just sit back and enjoy the ride.

[rayv]

I have a feeling 2 strokes are coming back little by little and wouldn't that be cool if Kawasaki, Honda and Suzuki started making 2 strokes again and they come out with a 500?

[robyohr]

Nice touches on the YZ motor, both with and without the carbon

[TwistedTriggerEnduro]

Thanks for breaking down the details and keeping us in the loop. 👍

[DiCE_]

looking foward to a part 2, i would like to see some dyno runs as well.

[Newmyyy]

the gold wheels are sweet on that Yamaha!

[EJ-]

I rode my uncle's KTM 300 it is absolutely insane. You better know how to ride if you think your going to blast the throttle. It will definitely hurt you bad.
Awesome vid guy's 🔥👍

[Fvission]

Ping, you really need to try my TMR YZ315 stroker. I've had KTM 300SX, and even YZ300. The stroker is where it's at. Super smooth everywhere with massive over-rev! With the A-kit, it's a 450 killer for sure.

[Erik-kpux]

Hoping to get those same rims on my 01 rm250. Gold ones are sick!

[yzbrett]

I'm not sure if this was used, but the KTM kit comes with a new CDI which when not used is said to make a wild bike. Also, don't forget a KREFT 2.0 Powerdial can easily be added as well as spring changes that can change power valve behavior.

[Jstr]

They should allow 300cc 2 strokes in the 450 class and 150 for the 250 classes

[ronaldbabbitt]

Awesome thanks brother great 2 smokers 🏁 CR 500 2001 Built🤠 owner 🏁

[camdent]

The yz looks so good both bikes look amazing 👍

[Apalm]

I have a 2019 300 tpi how can I get the filter cover side plastic with the holes in it