2025 Kawasaki KX450 TESTED

#motocross
The 2025 Kawasaki KX450 comes with an updated airbox and updated ECU mapping. In this video, MXA’s Josh Mosiman, Dennis Stapleton, and Josh Fout discuss the pros and cons of the Kawasaki KX450 after spending a year on this bike, which was all-new in 2024. We also show you the new KX450 air filter. The KX450 placed fourth in our 450 Shootout last year and we're excited to line it up against the other new 450s here soon.

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[gynn]

Everyone complains about the kx not making enough power. 98% of you will not use anywhere near the power of any 450. Keefer even detunes his yz450. If you want more power on the kx get a pipe or ECU. These bikes ride like a 350 which is awesome. If you want to make it feel like a monster throw a few parts on.

[JanASS]

Idea of easy to ride 450 is more and more in line with my future, dirt bike needs. Last weekend I've rode Gas Gas 450 and was suprised how mellow it was. I really like this new Kawasaki and would consider it for next bike (if money will allow). Only this durability thing but going through comments - weekend warriors don't wear out this bike so fast as MXA's Wrecking Crew. For next bike I would think about new KX 450, Austrian 350 Beta RX 450 as I'm a Euro guy.

[joshuastamper]

I’m not a pro rider by any means but I ride fairly hard but smart. My 23 has a 100 hours on it with everything original except for the chain and air filter. I wash my bike after every ride and it looks almost as good as it did the day I brought it home. I don’t know why these guys have so many parts failing and or need replaced. My plastic is in perfect shape with only a few minor scratches.

[awesomefish]

Spit my drink out @ the metal pipe falling sound effect 😂

[kukko]

@3:03 "...When it hasn't been your day, your week, your month or even your year, but I'll be there for you!"

[fabriziograziani]

Hi guys, thanks for your opinion but for the first time I wasn't happy with your test...not being so powerful for a 450 I see it as a quality and not a flaw, for an amateur rider it's probably the best bike he can buy and have fun without your body being massacred by the power of a 450... greetings from Spain

[CRITESBIKER]

Two improvements to be made. Magneto that has a puller designed into it like a sram bicycle crank (strengthen the crank at that point as well), And a steel protective sleeve that protects cases from damage when the bike throws a rod. Also wonder about 3D printed case halves out of titanium. (Bought an old bike to repair and ran into these issues).

[pags]

I think people are complaining about the flat torque curve, 57 HP is good!!

[bigmike]

Crazy to think that the 2019 model is still the best one yet

[DAREDEVIL]

I was thinkin of tryin to get a 25 for my next Kawi, haven’t bought one since 11. You know I’ve been watching you guys since the beginning, but I have to say Although I understand and Respect your opinions about 96% of what u guys call flaws Most of the time is Void when ppl Modify their bikes. I’ve had most brands on here and By Far strongest ones were Kawi/Suzki with Yamaha close behind them and I’ve had multiple different versions and types, quads as well!! That’s just my 2cents tho, Good info and vids, I Still Respect that 👍💯

[dylanp]

Always been a honda guy and then Yamaha then probably suzuki love the yellow and the price. The kawi looks good tho.

[Automattie]

Wish bikes still came with a kickstarter.

[tmmckean]

95% of the riders only use about 30% of the engine... soooo. That said, weight reduction would benefit everyone! Maybe less emphasis on the throttle, and more emphasis on weight reduction. Target 210lbs!

[DNAGDX]

It would be nice to see a desert version with 6 speed trans, headlight, brake light and trip computer. KLX450? WTF Kawi!

[butter]

So maybe see some bigger changes in 2026 with the engine or is that not gonna change since it being the slowest and heaviest is kind of a large downside.

[jhheintz]

Gotta weigh getting a ‘24 at a significant discount and modding at this point. Huge rebates and tons of stock out there

[matthewtoes]

I like the green bikes but if I was on the way to the dealership I think I would go for the Yamaha this time been so much rave about em
Having to spend a extra 2000 after paying for the bike is terrible for the P.C PIPE AND IGNITION

[DTM]

My 2015 was a holeshot animal. How is this years kx?

[Dirtbiker]

Lmao I gave 84 hours total on my 2020 kx450 never changed any clutch parts at all..

[shaynebrown]

Tell these dudes to get off the clutch if bro can only get one hour out of it lol