[SCNinja400]

See y'all in the morning at 6!!!

6am PT....

Here are my predictions for the US market. Hopefully Kawasaki doesn't punk us and not release the ZX4R today.

7500-8500 usd
399-410 lbs
72-77 hp

Edit: Nice bike but it is very close in weight and price to my current 2021 ZX6R KRT so I'm not seeing much benefit for me personally. The ZX6R with a slip-on is around 420 lbs and the 2021 ZX6R KRT ABS is 11.5k.

ZX-4RR

9699 USD
412 lbs

 

[xorbe]

USA didn't get ZX-4R, only Canada? Both got ZX-4RR. Why is the R more expensive than RR in Canada. Edit: they fixed the pricing swap. RR has qs/ab and "zx10r rear style" suspension.

Bore/stroke (57.0x39.16 = 399.7) is NOT the same as Kove 400 (59.0x36.5 = 399.2) wow there are two of them now.

Anyone see power numbers? [edit: 76hp and +3 w/ram, 26.5 ft-lb tq @ 11000]

 

[kpier883]

From Kawasaki.com:

Weight 414.5

Stroke 39.1 mm suggests Redline around 15000 RPM:

Ninja 4RR RPM	39.1	10000	12000	14000	15000	15500	16000	16500	19000
Piston FPM	1.673228	2789	3346	3904	4183	4323	4462	4601	5299

For comparison, Ninja 400:

	Stroke	10000	11000	12000	12200	12500	12830	13000	13250
Ninja 400	51.8
Ninja 400 stroke in inches	2.03937	3399	3739	4079	4147	4249	4361	4419	4504

 

[sbk1198]

Holy ****! $9700??! That's way more than I expected. And about 50 lbs heavier than the ninja 400! Might have to pass on that now.

 

[xorbe]

But 42 pounds lighter than a CBR650R.

ZX-6R has 45.1mm stroke vs ZX-4R 39.1mm, hard to say about rev limit.

Kawasaki USA only posted a YT video for the jet skis. 🤪

 

[sbk1198]

Everything's lighter than a CBR lol This is only like 10 lbs lighter than the ZX6R which is not a bragging point. I wish they would at least tell us how much power it makes. But the price and weight makes it a big disappointment in my opinion. I do like that it has autoblip if I'm interpreting that correctly. The power modes and TC is all worthless for a bike that's most likely under 70 hp.

 

[kpier883]

At around 315 pounds (after mods) on my Ninja 400, I am more inclined to look into power mods for my 400. I know there are N400s putting out over 65 hp (not cheap) but to me a hot rodded 315 pound 65 HP bike seems better than a 415 pound 70 or 75 HP bike.

 

[Boomerlcd]

So I imagine OTD price of 11k.... Seems steep. It is the Elusive Double R that Kawasaki does for special models though. Not sure if its worth the cost. 1K more for a ZX6R. I still wants for some reason....

 

[xorbe]

2023 Kawasaki Ninja ZX-4RR KRT Edition Coming to the US

A class from the past is reborn in Kawasaki’s 400cc inline-four powered Ninja ZX-4RR KRT Edition supersport. And it’s coming to the US this spring.

www.cycleworld.com

Its Official: Kawasaki Announces The 2023 Ninja ZX-4RR KRT

The 2023 Kawasaki Ninja ZX-4RR KRT is a mini ZX-6R and revives the small-displacement, inline-four cylinder sportbike craze that was popular in the 1990s.

www.motorcycle.com

Kawasaki Launches All-New 16,000 RPM Inline-Four Ninja ZX-4RR

Kawasaki has launched an all-new 2023 Ninja ZX-4RR KRT Edition powered by a 399cc inline four-cylinder DOHC engine with traction control.

www.roadracingworld.com

Kawasaki to introduce Ninja ZX-4R four-cylinder Supersport

With specifications varying by market, the most powerful Ninja ZX-4R is equipped with a high-output engine that delivers an exceptional 80 PS in a lightweight, compact Ninja ZX-25R-based chassis for superior cornering performance and acceleration feeling. At its introduction, the Ninja ZX will...

www.kawasaki.co.uk

Pocket rocket: Kawasaki Ninja ZX-4R is ready and it's headed for Europe in 2023

See what the finished Kawasaki Ninja ZX-4R looks like and get the full spec here on MCN.

www.motorcyclenews.com

2023 Kawasaki Ninja ZX-4RR | First Look Review | Rider Magazine

The 2023 Kawasaki Ninja ZX-4RR is a new track-focused sportbike powered by a 399cc inline-Four with ride modes, traction control, and more. MSRP is $9,699.

ridermagazine.com

2023 Kawasaki Ninja ZX-4RR Is Finally Here To Take The World By Storm

Kawasaki introduced its hotly anticipated Ninja ZX-4RR to kick off February, 2023, and it's packed with oodles of features to enjoy on the street and the track.

www.rideapart.com

 

[xorbe]

Motorcycle.com said: "26.5 lb-ft of torque at 11,000 rpm. Our guess is peak power will be around 40-50 hp." Okay, 26.5 * 11000 / 5252 is 55.5 hp and that's unlikely the peak. It's going to make 60-something at the crank. CycleWorld article claims 16K red line.

 

[sbk1198]

Have they announced when they'll be available in dealerships? Can't find any info on that. Also I think it's weird they're starting with a RR version. Usually that's a special edition available only in some years. Maybe they'll release a regular ZX4R next year? If that's the case it's weird they're doing it backwards.

 

[Duckman]

Holy ****! $9700??! That's way more than I expected. And about 50 lbs heavier than the ninja 400! Might have to pass on that now.

Same here. I also saw torque as 26@11k. Based on that and 14k redline I’m guessing somewhere not much higher than 60-62 hp max. At 415 lbs it may have a bit more top speed than the twin but I doubt the performance increase will justify nearly twice the cost for a track bike.

Cool bike but……. We’ll see

 

[xorbe]

when they'll be available in dealerships?

The articles vaguely say "Spring". Yeah no idea why only Canada gets R and RR.

Canada: 12.3:1 compression. USA: 12.9:1 compression. Article says: 12.6:1 compression. Someone make up their mind, lol

 

[kpier883]

16000 RPM translates to 4462 FPM piston speed. Pretty high!

 

[RD52]

Everything's lighter than a CBR lol This is only like 10 lbs lighter than the ZX6R which is not a bragging point. I wish they would at least tell us how much power it makes. But the price and weight makes it a big disappointment in my opinion. I do like that it has autoblip if I'm interpreting that correctly. The power modes and TC is all worthless for a bike that's most likely under 70 hp.

I think it's a good price point. If it was much cheaper it wouldn't have good suspension components and all the other goodies. If they'd put crap suspension on it and charged $7995 I wouldn't be interested at all.
Agree on the weight, I was hoping for 20lbs lighter. But then would cost $2k more.

 

[xorbe]

With Kawasaki's $735 dest/freight, this is definitely pushing $12K otd in California. ZX-6R isn't $1K more, it's $2300 more with ABS.

 

[jetpilot01]

@sbk1198 the owner of the dealership called me this am to tell me what he knows for the moment. expected date of arrival april > july . maybe there will be one at daytona? Im guessing yes

 

[Rich T]

Just to compare a bit...

N400 claimed torque is 28 ft lb @ 8000 rpm with 11.5 compression ratio, which is 43 hp @ 8k rpm (out of 12k rpm redline)
ZX-4RR claimed torque from those articles is 26.5 ft lb @ 11k rpm with 12.3 or 12.6 compression ratio, which is 56 hp @ 11k rpm (out of 16k rpm redline)
ZX-6R claimed torque is 52 ft lb @ 11k rpm with 12.9 compression ratio, which is 114 hp @ 11k rpm (out of 16k rpm redline)

Peak hp is typically a bit higher than the hp at peak torque (shown above), as torque falls off slowly -- so typically peak hp is at a slightly higher rpm as well.

Maybe USA compression ratio will be bumped?

 

[xorbe]

The UK article details a "ZX-4R SE" model with qs/ab, smoked screen, USB power, and sliders (but no fancy rear shock).

Kawasaki.co.uk lists 76 horsepower (and 79 w/ram air.)

This is also from the above site, BUT seems the same gear ratios at the Ninja 400 ... yeah not sure about that
Get out your GearingCommander:
1st 2.929 (41/14)
2nd 2.056 (37/18)
3rd 1.619 (34/21)
4th 1.333 (32/24)
5th 1.154 (30/26)
6th 1.037 (28/27)
Primary/Secondary Reduction 2.029 (69/34) / 3.429 (48/14)

 

[Duckman]

With Kawasaki's $735 dest/freight, this is definitely pushing $12K otd in California. ZX-6R isn't $1K more, it's $2300 more with ABS.

Kawasaki.co.uk lists 76 horsepower (and 79 w/ram air.)

If that posted hp is for real I’m impressed but I have doubts. If it truly produces maximum 26lb torque at 11k revs and can hold that torque all the way to 14k revs it would only produce about 69 hp.

I went to the Kawi UK site to see if I could verify the torque spec I saw but don’t even see the bike listed. Where you were looking did they list torque?