2023 Kawasaki ZX-4R and ZX-4RR - Complete In-Depth First Review! 

This guy absolutely gets it. He doesn’t just try to sell you a bike, he actually knows the bikes, and knows what people actually need to hear. Very solid. He’s honest enough to say that superports are incredible, but above his skill level, and so not particularly well suited to his street riding preferences. I know a lot of riders that could learn from that. The ZX-4RR is going to be an absolute banger for a street supersport. People say you have to get the fastest thing, but what about people who restore classic cars and bikes? Are those still not badass? I’d say most of us agree that they are, just for reasons other than being fast. Just because technology has progressed, or it’s not a supercar/bike doesn’t mean it can’t still be the best thing ever. Don’t let anyone tell you that you “need” a liter bike or something. You just might enjoy something like this more.

Congratulations on the content!!!! You showed in 30 minutes much more detail than thousands of Filipino and Indonesian videos did not show.

I'm silently watching a lot of your videos thinking about buying my second bike and i just want to thank You for amazing reviews and comparisons, it's rare to find someone so good at this.

Someone on the forums who's a tuner has an ECU and the general thought is that yes, it revs up to 16k (15.2k or so), but it starts cutting the throttle past 11.5k rpms. Without a dyno graph, this seems to point to them limiting the power to achieving max at 11.5k (exactly like they said it would be). However, this is still just a flash away from saying "no, let's keep the throttle open further past 11.5k".

Just pulled the trigger on a black ZX4-R, in love with it!!

My thanks from us over in the UK, yours is the first real video I've seen of this bike. Out the gate, I was worried about how cramped the riding position would be, super that you answered that straight away. If you get a chance to ride the bike, then please film it for us. I understand of course a customer might purchase it before then. All the best. John

Luv your reviews Peter, always insightful and detailed 👍…I’m keenly awaiting this to arrive in Australia as it’s on my shortlist to upgrade to from my current Ninja 400, however I was concerned about the riding position being to extreme, but being similar height (6ft) to yourself, it didn’t look to bad….can’t wait for the on road review 🙂

Been thinking about trading in my Z650 on a ZX-4RR when they release them here in Australia later this year. Good to hear it’s not an overly committed riding position as that would be a deal breaker as I use my bike for the daily commute.

I have been waiting for this review for so long! Let's goooo!

Thanks for the great review! Best reviews I’ve seen on RU-vid by far

Nice lil' bikes, thanks for your highly appreciated work with this VDO, Peter 🙏

Your reviews are 🔥 the proper informative videos we need. 👍

Man these bikes are so cool. Wish more small sport bikes had this philosophy. I hope consumers buy/support them

Hey Peter, I've had mine for a year, and you couldn't be more right about any of it. I DARE you to find a more fun bike that goes like this one and cost almost nothing to insure. I'm so glad you made this video and got me pumped up to buy one. So happy I got mine.

The definition of "Its more fun to ride a slow bike fast then a fast bike slow!! Kawasaki ZX4RR. Go team green!! Nice vid yo, I was truly entertained!! 💚

Incredible content, very rich in details

Great review thankyou 👍

Thank you for this bro really appreciate it 🤝

Underated channel this guy can sell hundreds he has more knowledge than other dealers ✌️

this bike (zx4r with QS) has exceeded all my expectations! :)

I ordered mine at my local Kawasaki dealer . Can’t wait for it to get here!!

What is the price difference between the zx4r and the zx4rr?

You’re putting out some great, unique content, and the deep dives are appreciated. I have only ever owned Kawasaki, and you seem to be a fan as well. Thanks for the honest videos! So a quick question; size wise, how much larger is the Ninja 650 ( I’ve owned many;) than this new ZX-4R? Is the seating positions at all similar? Thanks again for all you do, even for those of us “ down under” in the states🤓😉👍!

Such beautiful bikes

So so excited for this. My first bike was a 1991 GSF250 Bandit (lovely rev-happy 4cyl), I've had much bigger bikes but there's such joy in having a small capacity high-revving sportsbike that you can really get the best out of in the real world. I hope this sells well and other manufacturers follow suit. 500cc parallel twins feel so flat and miserable by comparison

I miss my Ninja 400, but I caught the adventure bug and traded it for a KTM 390 Adventure. This ZX-4R looks like a very exciting new bike! Hopefully other manufactures follow suit and give it some competition!

Looking forward to one of these after my Ninja 300!! . Thanks for a great review.

thank you for the videos ✨. do you have any info on fuel consumption, please?

Thank you for this... I actually thought both of them are one and the same.

AWESOME BIKE BRO

How to put the gearbox in racing mode? Need some adjustment on the quick-shifter?

My dream bikes ❤

Thanks for pointing out the paint colour issue with the ZX-4R. I prefer black bikes, but the ZX-4R just doesn't look as good as the 4RR in every photo and video I've seen. The KRT colours seem to complement the contours of the bike much better, but it's good to know the black version isn't as bad in person.

This is the bike I've been dreaming of ever since I bought my Ninja EX250R brand new in 2007. I've always wanted a small displacement 4-cylinder. That said... I'm moving away from the US for a couple of years. Really hoping that the ZX-4R still still be available in 2025, when I am back.

Exciting!

Greetings from Ontario my friend! An excellent concise review, very good to know it does rev till the red line, now if only we can make sure if the peak bhp is the same as our European bros?

Watching everything I can and so couple of questions here.... 1) I did not see anyone above 6' on it yet, but because I am like 6'4" and Ninja for me was great for about 2 hours (just not so wide and it felt like CBR 125 on steroids :-)) so I suppose no problem here as it is wider and slightly taller. Surprise was YZF-R3 which feels really bigger compared to regular Ninja 400 2) Does RR version have USB socket included in price? It should as SE have it, right? 3) What is the useful weight you can put on the bike? Is it around 180kg or such? 4) What are the service intervals? 5) What is the procedure for first 1000 (or 1500km?)? Is it limited on revs (to which level) or you are supposed to use only rain mode (or road)?

You can add the quickshifter on the R. I spoke to my local dealer, and he said when the owners came in for the first service they added the quickshifter.

Nice comparison. ❤❤

Wow, a TFT dash that actually HAS a Fuel Gauge !!! Awesome. In that same area of the dash - on the zx-10r, they use it for something completely useless - unfortunately. Now we will need to wait and see if the zx-6r will (ever) get a nice TFT dash - and if they will be smart-enough to give us a fuel gauge, too. Thanks for your great review by the way.

While I understand the benefits of new tech like the quick shifter up & down, I would still prefer the good old throttle blipping action while squeezing the brake lever on downshifts. Just like in a manual car, I don’t like using the auto-clip function (if it’s equipped with one). Speaking of that, can you turn off the quick shifter on this zx4rr?

I definitely might get this next I got a Kawasaki ZX6R 2007

have you done any videos on the ZX-25R? quite interested in how it shakes up as a beginner bike vs the Ninja 400 and 650

Great video, but anyone who knows and has been into motorcycle knows that the 4 bangers are the way to go back in the late 80 early 90 they had 250cc 4 cylinder Reving to 20 000rpm I've had the chance to ride one a few times

just took deliver today with the zx4rr in Vancouver BC, I can confirm that Canadian version can rev to redline. But, dealer told me that power does cut out on the go, so need to get it flashed.

Finally! Actually I’m into that bike and Is it sold already??

I love Kawasaki and Yamaha

I was hoping for a large price differential but now I see that's not the case AT ALL

Nice bike

"these are the only two we may get" 🤣🤣🤣

Planning on ZX4RR as my first bike on lower power mode! I can't wait!

Hi mate I’m in the UK and have placed a small deposit on the ZX 4R just gotta wait wait till October- November now .

Wow, been waiting for the regular zx4r. Wanted that instead of the zx4rr. Dealers are telling me that they are not making the regular zx4r for some time. Even on Kawasakis website they do not show the regular zx4r. Not sure how you even got one. You know the price of the regular zx4r?

do you think you would be able to add an up and down Quickshifter on the zx4r?

Wonder how much the quick shifter is to add to the R

I'm just a little bummed that we don't get the 4R in the US. I'd rather save a bit of cash than have a quick shifter.

There is nothing like a bright green Kawasaki ninja with a green suit boot glove 🧤

Thanks for the very detailed review. Please check the VIN plate and let us know where Kawasaki is assembling these machines…Japan, Thailand, or Malaysia.

Great video! Do you know if the KQS quick shift can be turned on and off? I love the RR color scheme but will usually always be doing clutch shifts so was wondering if it could be turned on and off?

they do rev to 15-16000 but power stop climbing at 11,500 rpm for canada and usa. They are detuned to about 55 hp to the wheel.

Hey man I hope you see my comment! Ill take both bikes and I can have my guy pick them up within a couple days if they are both available.

Would love to see one of these but considering I've not yet seen an R7...

Does it have the same positive neutral feature that was on the ninja 400 / z400 ?

Can a beginner start on this bike? I was looking at a ninja 500 but I really want the 4cyl engine. I want a bike i can grow into and enjoy for a long time. I dont need the speed of the zx6rr. I think the price for the zx4r is worth it in the ling run. What you guys think?

Will those clip-ons fit a ZX-6R to make it more upright?

Love form Bangladesh 🇧🇩

I like the radial calipers, do they come with radial master cylinders too?

Can't wait for these to drop in Europe.

can you install a quick shifter onto the zx4r or is the zx4rr the only bike that can have it?

Genuine question, can you change the inline from 2 to 4? I mean is that possible?

I am caught between this bike and a ninja 400. I want to know if they are equally comfortable and upright?

Is the zx4r coming to the states? I like the look of the zx4r more than I like the look of the double r

I wanna see the bike from behind. Too see how the 160 tire looks in ratio to the body. Sorry for my english. Thank you

how many miles or km on full tank with easy driving ?

cool so its here in NA (United States too)? All my dealerships are presold but they told me I can come sit on one when the first comes in as I am a short rider.

Does zx4r have quick shifter like zx4rr

Where are you located will the black zx4R be available in the US? @

He did not have the data when he made this video. Flash it right out the gate if you want the full power. Full exhaust with no O2 sensor if you want the rest it can give. Flash fixes the top end. Full exhaust moves the whole power band up and substantially reduces weight.

When is the Z400RS ( 4 CYLINDER ) arriving ??? Thanks.

I have a 200 cc bike want to upgrade which one would be better zx4r or zx6r ???

So has EPA restricted the rpms to cut down the noise and HP?

How much are they. What’s the price difference between the R and the RR ?

Do you know if they will have a naked version of it? Great review!

is the rr also available in black?

Will the zx400R be in the U.S? I’ve only seen the zx400RR in store and online so far

Ninja 400 is dirt cheap to buy and own in comparison to this and still quite fun. But this, is an amazing bike.

When is the zx4r hitting the dealership? Are both models hitting at the same time?

Wait a minute, aren't you the guy that used to do videos for the Huyndai Kia Channel?

So how much power does the zx4rr make in stock form?

Did i miss it? what is the horsepower rating?

How do u charge your I phone

So the brakes they chose for the 4RR are better than Nissin ? Or is this cheap corner cutting they pulled to save money & have the buyer upgrade the brakes?

Funny thing taht here in Brazil we have only the zx-4rr, but here its just called zx-4r. They stole us one R 😂

What’s the price for the base zx4r?

The zx4rr comes in black now

Which one is better zx4rr or cb650r 2023?

How does the 4R compare to the 650?

What’s the top speed and 0-100kmh for these?

kawasaki ZX-25R launched at indonesia. give it review too

Why getting only 2? I hope I don’t have to fight to get my hands on one.