[realpsi]

What is the primary size? I don't want to take from this thread so an explanation. The 75mm posted from a Gen6 made me start running more simulations on exhaust primary and collector sizes. What I found is the primary size a little larger than 41mm and the collector size larger add a little horsepower. I suppose the balance connections might allow the primaries to perform as larger pipes. So I started looking, 60 and 65mm silencers make more power as well. I think the 75mm is planned and actually done to add power.

 

[ypyk_xau]

Boy had to check archives. lol. Primaries are 42.5mm.

 

[theatiss]

Subscribed

 

[brianhevans]

The post I made earlier is slightly incorrect. Turns out the ECU p/n: 21175-1723 AND wiring harness p/n: 26031-3773 are BOTH new, before I had stated that JUST the wiring harness was new. The data connection tool p/n: 57001-0011 appears to be the same as the one used for 2016-2020 bikes.

 

[peterj59]

Whats availability on these (10rr) can't get any information from Kaw corporate, when will these start coming in

 

[brianhevans]

@peterj59 I spoke with my friend over at KHQ and he spoke to the accessory manager. The parts are now coming by air and will be in the US in 2 weeks, first week of March.

 

[ypyk_xau]

What brand is the new ECU?

 

[brianhevans]

I'm sure it is the same as before but no one knows until it arrives.

 

[Vince c]

Good day guys would like a second opinion on the 2021 zx10r headers.. I'm running a full M4 titanium system on my 2019 zx10r KRT. Wanted to go with stock headers, it seems I'm getting some restrictions in terms of pipe size...would the 2021 zx10r headers bolt right up? Or parts will need to be change out.

 

[brianhevans]

@Vince c the outlet on the 2021 header is MUCH larger so a new mid-pipe is required.

 

[Vince c]

@Vince c the outlet on the 2021 header is MUCH larger so a new mid-pipe is required.

That won't be a problem at all just wanted to know if the headers would bolt right up on the 2019 motor, I notice the 2021 headers has a cross over pipe from cylinder 1 to 4 just checking if it would be in the way of the oil cooler on the 2019 zx10r motor

 

[brianhevans]

I believe the 2021 headers would bolt up to a 2019 motor, engine cases are the same.

 

[1000 supa cc]

So from what I have learned in my research the 2021 ZX-10RR has the following changes...

longer swingarm (+8 mm)
stiffer rear spring
less offset in the triple clamps (-2 mm)
softer front springs
different gear ratios for gears 1 through 4
different final drive gearing
oil cooler
slightly different slipper clutch settings
handle bars are 10 mm forward and the footpegs are 5 mm higher
1 mm lower swingarm pivot

I have a friend who is a development rider for Kawasaki and he said the lower swingarm pivot helps mid corner to exit, the change in offset results in less trail which makes the initial turn-in BEFORE the apex easier and the longer wheelbase (a total of 10 mm) combined with the added downforce of the front wing (+17% over 2020 model) contribute to a natural wheelie control.

I know I can change my 2019 ZX-10RR (race bike) to have all the changes listed above (it already has some)....so I wondered if there is anything electronically that makes buying a 2021 bike a step forward that I can't get from my 2019?

I can't seem to find any info about the electronics that is meaningful...as I don't care that is has rider modes, or a TFT screen, etc.

I DO care IF it has electronics that are a step forward from the 2016-2020 bike, which are not bad at all....

I have asked my friend from Kawasaki HQ specifically about the electronics and his response was, "The (kit) ecu is different with some upgrades in the software, it looks like they have opened up some parameters." He could not elaborate on the changes yet as he doesn't have a kit ecu in his hands yet but they are due mid-February.

My 2021 ZX-10RR has arrived so I will pick it up in a couple of days. I plan to do some on-track testing against the 2021 Honda CBR1000RR-R SP and then a back-to-back test against my 2019 ZX-10RR race bike to see if the bike is significantly different.

The cost of the new bike is pretty high at 29K given that I bought a 2017 RR (19K) and 2019 RR (24K).
For me I think the blue-printed motor is worth some extra money given my plans to use this as a race bike but Kawasaki has been pretty tight-lipped about any real updates to the electronics but I guess we will see...

I'll have more info in the next couple of weeks once I ride it on track.

Can you ask him if it's better to go one down on the front or two up in the back. What would kawasaki sell the bike with if emissions were not a issue.

 

[kanwisch]

/delete, don't have RR experience