[Iambored]

Hello all, I just purchased the Massmoto Full exhaust system and it doesn't have the 3rd 02 sensor bung location. Is there a way to not run the 3rd 02 sensor on the 2021 R9T?

 

[Tmation]

Have you tried fitting the system to your bike? The Euro 5, 2021 on, bikes are different and the system may be for a 2014-2020 bike.

If it fits, any decent exhaust shop should be able to drill a hole weld a suitable boss to your exhaust for the 3rd sensor (you can buy the sensor boss on eBy etc. just make sure you get the correct thread size).

 

[Midas]

@Tmation is correct. If the headers don't have the 3rd bung for the post cat sensor it is for the 2014-2020 R NineT and you will have to have a shop put in a bung for you. The only reason I know this is because I just went through this with a purchase here. Because the exhaust was made for models prior to 2021, I would need another pipe for where the servo flap is, and a 3rd hole for the oxygen sensor to get it to work.

You also may need to check the diameter of the pipe to make sure your link pipe or slip on fits. Apparently they changed the diameter by 1mm or something.

 

[recon r9t]

You are in Luck ! I just installed a Diablo from K Speed on my 2021. Diablo is for 2020 and below models because it only has 2 o2sensors. I unplug the 3rd o2 sensor and don't have any error codes. runs the same and no issues.

What did you do to your R nineT today?

Installed my adjustable Paralever arm from EX Motorcycle. Currently at default length, but I may lower the bike for a slammed look. It could be fun. I also swapped out my Wunderlich seat for a /5 seat. It’s much softer than Wunderlich. Now do I leave the seat alone or have it redone in a...

www.ninetowners.com

 

[Midas]

You are in Luck ! I just installed a Diablo from K Speed on my 2021. Diablo is for 2020 and below models because it only has 2 o2sensors. I unplug the 3rd o2 sensor and don't have any error codes. runs the same and no issues.

What did you do to your R nineT today?

Installed my adjustable Paralever arm from EX Motorcycle. Currently at default length, but I may lower the bike for a slammed look. It could be fun. I also swapped out my Wunderlich seat for a /5 seat. It’s much softer than Wunderlich. Now do I leave the seat alone or have it redone in a...

www.ninetowners.com

Oh man so this means I might be able to do the same with the 2020 Akra headers I just got and not have to add a bung. Although there are no codes, notice any issues with how the engine runs?

 

[recon r9t]

No issues so far. Runs perfectly fine, no difference.
This is what you can do. unscrew your 3rd sensor and zip tie it before you unplug it and run it for a couple days. This is what I did before buying the K Speed exhaust.I wanted to make sure.

 

[Midas]

No issues so far. Runs perfectly fine, no difference.
This is what you can do. unscrew your 3rd sensor and zip tie it before you unplug it and run it for a couple days. This is what I did before buying the K Speed exhaust.I wanted to make sure.

I'm going to try that. If this works then I'll just install the servo flapper delete pipe and I should be able to mount the full system from a 2020 onto my 2022. That would just be fantastic.

 

[Iambored]

No issues so far. Runs perfectly fine, no difference.
This is what you can do. unscrew your 3rd sensor and zip tie it before you unplug it and run it for a couple days. This is what I did before buying the K Speed exhaust.I wanted to make sure.

Thank you! This is really good news for the Euro 5 owners. How long have you been running this setup? Did you unplug the 3rd sensor completely?

 

[recon r9t]

Thank you! This is really good news for the Euro 5 owners. How long have you been running this setup? Did you unplug the 3rd sensor completely?

Ive been running unplug sensor for a week with the stock exhaust and 2 nd day with the diablo which shouldn't matter.

 

[Iambored]

Ive been running unplug sensor for a week with the stock exhaust and 2 nd day with the diablo which shouldn't matter.

Thanks for the info , what did you do with the flapper? Did you unplug that as well?

 

[recon r9t]

Yes. Unlike the previous models, ours is welded on the cat.

 

[Iambored]

UPDATE

Thanks for the Tips from @recon r9t . I have been running the massmoto exhaust with the 3rd 02 sensor unplugged. No CEL so far. Hope this info is helpful for other 2021+ Euro5 R9T members.

-Eddie

 

[recon r9t]

Pics or it didn't happened

Its an interesting design, is it loud?

 

[Midas]

Same here! @Iambored @recon r9t . Been running the bike with no 3rd sensor or flapper on my '22 without any issues. I'm about 400 miles with this setup and besides an incredibly loud cold start for about 10 seconds everything is perfectly fine.

 

[Iambored]

The exhaust is pretty loud but I am okay with it since I don't ride the bike too often. I can record a sound clip if anyone is interested. It does look pretty unique and cool to me.

 

[Midas]

That looks sick!!!

 

[Kowalski]

is there even any muffler inside? that looks like its just a straight pipe and that should make the sound really tinny

 

[Dominic]

I love those mass moto exhausts… I’d love a good soundclip!

I’d go for these ones:

Impianto completo 2in2 Hot Rod – BMW R NINE-T - Exhaust systems

https://www.massmoto.it/wp-content/uploads/2017/11/video-sound-RnineT.m4v ---------------- ITA ---------------- La particolare forma a tubo del nostro impianto di scarico completo

www.massmoto.it