another good video

 

So much for breaking in the poor thing.

 

No I actually translated, and he was trying to give a tutorial on what chopping the throttle and hitting the redline looks like - a real teacher sacrificing his bike during the break-in for our edification

 

Oh...I see. I got it all wrong. I look forward to more "educational videos," especially the one on how to submit a warranty claim to Kawasaki Asia.

 

Based on those videos I think I'd like to gear it way lower. The stock final drive is 14T front and 48T rear. Is it even possible to swap out the drive sproket for a 13T? I wonder what our options are going to be for lower gearing.

 

You guys do know that there is a section on this forum specifically for videos, right ?

 

The 4RR's sound is intoxicating. 🤤
I love my Ninja400's song at full throttle but there's nothing like the sound of an inline 4 banger on the threshold of redline. 🤪

Nice videos. 👍I'm still in shock I'm actually getting one. 🙂

 

Wow those indicated speeds are way over even what GearingCommander shows, and that was already crazy long. That would put top of 6th at ~180 mph (indicated), that's wholly unnecessary gearing ... that's 4 gears and 2 overdrives, literally. You'll be able to ride this bike without ever shifting past 2nd gear. This is longer gearing than my 95hp CBR650R. Is 14/48 -> 13/51 even possible?

If any of you missed it, the zx4rr has the exact same Ninja 400's transmission ratios. Which is an odd decision imho.

 

Well.. hopefully highway travel is comfy

 

I did have some hopes I could up to third in the twesties. But in 2nd he got to ~138km/h (85mph) right under 15k rpm. Then he shifted into third, landed at 13.5K RPM at 156km/h (96mph). Yeah I would never be able to get to third gear in the twesties.

 

Yeah I can see a gearing change coming for the track to get full use of the transmission. 🤷🏼‍♂️😕
Again we will have to wait for the bike to get here to really see if the gearing is too long. 🫤

 

If we use the 3rd gear 193 kph figure, then in mph it's 66 / 94 / 120 / 145 / 168 / 187. For comparison, the Ninja 650 is 47 / 66 / 85 / 102 / 118 / 133, and a Ninja 400 is an almost identical 47 / 67 / 85 / 103 / 120 / 133. The zx4rr can indicate faster in 3rd than the Ninja 650 can in 5th ... (are they planning on offering a factory supercharger? lol.)

Let's just get all the number out, zx6r is 74 / 95 / 113 / 131 / 148 / 161. And a zx6r with -1/+1 sprockets is 67 / 87 / 103 / 120 / 135 / 147. Very interesting, that.

CBR650R is 63 / 82 / 102 / 124 / 141 / 159.

If you wanted to alter a zx4r to Ninja 400/650 numbers, you would need 13/63 sprockets.

 

So if I were to lower primary sprocket or raise secondary, would that give more low end torque? Maybe kawasaki did this for a reason

 

Hopefully that is a case of a horribly optimistic speedo, 1-4 should be short, 5 and 6 should be taller gears.
Gearing commander shows 6912 RPM in 6th gear at 70 mph.

Assuming stock gearing, 160/60 tire, and 16,000 RPM, also assuming the ratios specified in the manual are accurate:

1st gear: 57.5 MPH
2nd gear: 82 MPH
3rd gear: 104 MPH
4th gear: 126 MPH
5th gear: 146 MPH
6th gear: 162 MPH

Don't get me wrong, I don't want to be screaming down the highway at 9,000 RPM+ in 6th gear, but those first few gears seem a little tall.. maybe that could be an opportunity for the aftermarket? Shorter transmission gears? I wonder if they geared it so tall because of the RPM limited models.

 

I hope there are shorter gears available - feel like half the fun of a small screamer is doing 15,000 RPM at a very legal 45 mph down the middle of town

 

♫♬ Blame Canada ♫♬. If we consider their zx4r 11,500 limit ... 48 / 68 / 86 / 105 / 121 / 134 indicated (same as Ninja 400/650).

 

"Top Speed" video but I didn't see over 195 kph indicated just after 3:00

In some other video, an author stated his friend reached 230 kph (143 mph indicated) @ 87 kg body. Obviously the speedo is reading high. We need KPH vs GPS from one of these PH guys.

I hunted down zx6r numbers, max 162 indicated (same as GC) but 65=60 gps (per YT video), so reality = 149.5 mph top of 6th. Assuming at least the same error for zx4r then 143 = 132 mph at best presumably.

Also, did you notice that when riders shift into 5th at high speed, that's it ... the bike is done accelerating.

 

The sound of this thing in the tunnel is good for the soul

 

Really really hoping that these guys got the same canada gearing and that in america/EU we get a shorter gearing. It would be such a bummer otherwise

 

Really really hoping that these guys got the same canada gearing and that in america/EU we get a shorter gearing.

"For reasons", I'm suggesting these are the realistic mph at 16K: 55 / 78 / 99 / 120 / 139 / 155. Particularly this aligns 130 mph in 5th at 15k peak power.

Still don't understand why the Mustang video is indicating insane 193 kph / 120 mph top of 3rd. Maybe PH got a 15T/43T Frankenstein bike -- their engine stroke (+0.2mm) is already different than the rest of the world to satisfy their local 401cc freeway law. The bike is not even mentioned on Kawasaki PH website.

 

Confirmed that at least one PH bike (YT: Kenji Moto) doesn't have 14/48. Rider reported 43T rear. I assume 15T front, which makes GC numbers about what we see in the first video. USA has 14/48 for sure.

 

Looks different too. The overly zoomed one is from the US kawasaki site, other one from a YT video.

 

Yes, it seems PH sprockets are overall 19.6% taller. See post #21 for US values.

 

According to a trusted source for ZX4RR specifications, I performed a calculation based on the gearing ratio of the ZX4RR 2023 model using Gearingcommander.com. Here are the results. I believe there must be a significant difference between the ZX4RR speedometer and GPS (actual speed).

 

Thanks for doing this @VFR400R NC24 VN. Welcome to the forum!

 

USA 14/48 ... (PH has different sprockets) edit: Indonesia (14/48) video out today, confirmed.

 

USA 14/48 ... (PH has different sprockets)

View attachment 169

If PH applied 14/48, i believe speedometer will have huge error compared to GPS =)). Could you please provide PH sprocket gearing data?

 

Anything near a top speed of 150 would be pretty amazing imo

 

150 is what I was expecting, since the ones years ago made like 143 or so

 

I'm looking forward of listening to bikes on USA soil with different full exhausts on TSTs dyno !!

 

This photo was taken from the ZX4RR owners manual. (Philippines)

Looks like PH gets 43/15 and ID (Indonesia?) gets 48/14.
Hope this helps.

 

This photo was taken from the ZX4RR owners manual. (Philippines)
View attachment 175

Looks like PH gets 43/15 and ID (Indonesia?) gets 48/14.
Hope this helps.

Thank you for your data. After recalculating, the results looked unreal to me. =))