r/zx4r

Hey guys,
I ride a 2025 zx4rr and have 13.000km on the clock and for the last 1500km i have heard this sound like above 3rd gear after letting go of the accelerator.
I also had it in for service 500km ago and went by the shop and showed them this and they told me everything was fine.
The bike feels normal like it always does but just this whining/ whistle sound has never noticed me.
Does anyone know what it is? Or is something wrong?

I’ve seen a lot of questions about this exhaust and lack of reviews and that convinced me to buy this exhaust and try it out a little bit right now i’m waiting on the ECU to get back from TST but i will say the exhaust went together beautifully only one little modification for a bracket other than that looks great

I got a 2025 ZX-4RR second hand, and it came with a tail tidy from Amazon "MANTT"

I'm trying to put the license plate light, but it ends in two loose cables as shown on picture 1, and I need to connect to connector on picture 3, on the second picture is the original license plate light.

I'm new to Motorcycles, and, new to posting on Reddit, Maybe somebody knows what kind of adapter cable I need or what to do, any help is appreciated, thanks!

Love it so far 2025 3,800miles for 7k off market place. (Honestly a steal) Anything specific I should know or things to look out for. Additional maintenance? Exhaust recommendations? done some research of course.

After 19 years on Harleys I decided I needed an inline four. Just picked it up last weekend and man is this thing fun! I love how you can wring it's neck and not immediately go to jail. 😂 And it sounds so good!

How are you guys mounting and setting up your insta 360’s? I recently picked one up and haven’t figured out a good way to mount it yet. I want to safest and most secure option. Links appreciated :))

And it’s only 5th gear

Picked up my brand-new Kawasaki Ninja ZX-4R SE here in Japan, and I couldn’t be happier.
That high-revving inline-four sound is pure perfection.

Been wanting to change out the the stock exhaust on the ZX4 for a minute now and am looking for opinions on what the best looking slip on is for the 40th anniversary color way is.

I’m not worried about power gain or anything really, just mainly want a little more sound. Also don’t want to be the loudest bike in the neighborhood either though. I feel like the Graves is one of the best looking ones to match the 40th but iv heard it’s one of the loudest and there is no DB killer option for it.

What other slip ons out there do you think look best of the 40th?

Speedo is in KMPH
250 KMPH is 155.6 mph

Edit: not my bike, not my video, ai generated, in Mexico

Gas being what it is right now with no signs of it going down has me hesitant to tune it if I can only put in 93. I know it’s a supersport track bike that happens to be allowed for street but I mainly use it as a commuter so the few dollar difference between 87 and 93 can really stack up.

That oil filter did not want to come off