Not done that but i did come back from the Dyno yesterday having done the airbox mod about 9 months ago....5bhpthrough the whole range...noticeably different on the ride home...in a good way...
Velocity stacks
Hi everyone
Has anybody changed the velocity stacks on a gen 4 to move the torque curve higher in the rpm.
![Map Font Parallel Slope Rectangle]()
im considering buy the outer stacks from a 2020 z1000sx part number 14073 in the picture because their alot shorter than our z1000's. I'm presuming they should be a straight swap due to my understanding of the z1000sx being very similar to our bikes. Also has anyone got any good tips or proof of performance increases with doing the air box mod because considering doing that as well while I'm in there.
Has anybody changed the velocity stacks on a gen 4 to move the torque curve higher in the rpm.
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So the stacks finally turned up today its probably going to be a little while till I get them fitted because of Christmas and I have to move houses in January hopefully I'll have them on along with some other parts plus the airbox mod and full exhaust and get it booked in for a tune in maybe February
Attachments
Here are the throttle bodies. These are the same as what's on the ninja 1000 from 2011-2019 and the z from 2011- present. The part number changed a few times, but the basic throttle body never did. These are from a zero mile 2016 z 1000. I bought them because......I don't know. I just hit buy it now, back in 2018, and really have not figured out why.
The easiest and cheapest way to do this is to find a used airbox, on eBay. I think my spare box was 24.99. The box from the 2014-2016 ninja is probably the same as what you have,stock.
A 2011-13 box would give you two long stacks, and two short. After that,Kawasaki switched that bike to 4 medium stacks
Now that you mention it, the 2020 ninja 1000 went to the ride by wire system. They changed the throttle bodies when they did that? Go figure.....I dont know much about the 2020 z 1000as we did not get those in America. It looks like you need the older pieces.
I spent a good couple hours yesterday scouring the internet for as much as I could find and came across the same stuff. It seems there really just isn't that much information out there about our bikes and the aftermarket never really embraced it. I'm going to order the 2013 small stacks and it looks like partzilla has them in stock as well and 67 usd for 4 plus shipping is cheap enough to have another go. I must admit I may start looking for a crashed 2020+ z1000 sx from now because the idea of converting the z1000 over to ride by wire and getting a autoblipper is quite appealing but in the meantime these stacks will have to do
Attachments
I did some more digging and came across this thread
www.kawasakininja1000.com
It's from the ninja 1000 sx forum but I feel like it would be relevant to us here. It's got alot of r&d in there like turns out the earlier zx6r velocity stacks will fit as well.
And that the early 2011-2013 intake cam may be a cheap and good upgrade for us as well.
Also their is some really in depth looks at the stock airboxes and the changed over the years.
Ultimate 4th Gen Ninja 1000 guide to go fast
Hello guys, I bought my 2015 ninja 1000 April 2017 new in crate. It is my first bike and wanted something that was comfortable and didn't break the bank. From the time of purchase till now I have put 17k miles on her with ZERO issues. The bike has been abused since day one. I probably have...
www.kawasakininja1000.com
And that the early 2011-2013 intake cam may be a cheap and good upgrade for us as well.
Also their is some really in depth looks at the stock airboxes and the changed over the years.
The velocity stacks finally turned up today they are definitely the right oval shape.
Their barely half the size of the stock long stacks so hopefully they should make some nice power up top. It may be a week or 2 before I get them installed but I may get the tuner to do it when I dyno it so we can see the difference
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