BMW R1200RT/R1250RT Forum

Posted: **Thu Apr 16, 2020 3:01 pm**

I thought the cat was part of type approval. Im suprised if BMW approve the fitting without it.

Posted: **Thu Apr 16, 2020 3:08 pm**

The Akrapovic silencer is the only one approved for use by BMW.

Don't know if these headers are approved for use by BMW. The observation is that the valve has been retained.

If fitting the non-cat. version Akrapovic recommend the following.

When installing optional headers E-B12R7, remapping the ECU is recommended in order to prevent »check engine light« warning signal and achieve optimized performance and throttle response.

THIS PRODUCT DOES NOT MEET EMISSION COMPLIANCE REQUIREMENTS FOR STREET OR HIGHWAY USE.

Posted: **Thu Apr 16, 2020 3:34 pm**

“ THIS PRODUCT DOES NOT MEET EMISSION COMPLIANCE REQUIREMENTS FOR STREET OR HIGHWAY USE.”

Exactly!

Posted: **Thu Apr 16, 2020 4:01 pm**

I wonder if the Akrapovic header with a catalytic converter is approved for use by BMW.

Posted: **Thu Apr 16, 2020 5:03 pm**

David. wrote: Akrapovic manufacture exhaust headers for the 1250, https://www.akrapovic.com/en/moto/products/BMW/R-1250-RT?brandId=44&modelId=994&yearId=5778

Options are available in Stainless Steel or Titanium. In both cases, they have an exhaust valve, with or without a catalytic converter.

Interesting that the exhaust valve has been retained in all cases.
I wonder if they have had to do this to have them approved for use by BMW.
"Featuring exhaust valve for improved rideability in lower rpm."

Check out the installation instructions to see photos of the different Akrapovic v's BMW exhaust valve.
https://d1sfhav1wboke3.cloudfront.net/ImageServer/Apim2media/Documents/20687/a97ade48-8c42-4717-85de-617698a7ee92.pdf

That link is for a GS and GSA, different headers, is there one for the RT as well? Could look myself I suppose

Posted: **Thu Apr 16, 2020 6:04 pm**

It's a bit late after you've traded it

Posted: **Thu Apr 16, 2020 6:09 pm**

These Akrapovic installation instructions cover all R1250 models,
https://d1sfhav1wboke3.cloudfront.net/I ... 358c0b.pdf

Posted: **Thu Apr 16, 2020 7:15 pm**

David. wrote: These Akrapovic installation instructions cover all R1250 models,
https://d1sfhav1wboke3.cloudfront.net/ImageServer/Apim2media/Documents/20688/a3e289b7-8b0f-41c1-94f4-507ea6358c0b.pdf

Great, its just they show the GS headers, which are different to the RT. But let's be honest, its not rocket science to change headers - is it

Posted: **Thu Apr 16, 2020 8:09 pm**

Casbar wrote:
Great, its just they show the GS headers, which are different to the RT. But let's be honest, its not rocket science to change headers - is it

Not for anyone with any mechanical skills it's not, it's a very straightforward job.

Posted: **Tue Apr 21, 2020 12:46 pm**

Beagle wrote:Took silencer off to lube the flapper pivots.

What lube was used, was the flap seized and is it free now.

Beagle wrote:Service light now comes on but will have to wait till dealer will do it.

Can the service light be reset with the GS-911, https://www.youtube.com/watch?v=HmYQDuQyPFA

Posted: **Tue Apr 21, 2020 2:01 pm**

Borescope Pictures of Flapper Valve and Cat

Posted: **Tue Apr 21, 2020 3:30 pm**

That flap looks very clean, no sign of carbon or lubricant.

Posted: **Wed Apr 22, 2020 12:07 pm**

I only use Shell Nitro both in the bike and the X1.

Posted: **Wed Apr 22, 2020 12:34 pm**

David. wrote:What lube was used, was the flap seized and is it free now.

Posted: **Wed Apr 22, 2020 1:35 pm**

Wasnt seized just relieving boredom. Used Graphite/Copper spray.

BMW R1200RT/R1250RT Forum

Exhaust valve seized

Re: Exhaust valve seized

Re: Exhaust valve seized

Re: Exhaust valve seized

Re: Exhaust valve seized

Re: Exhaust valve seized

Re: Exhaust valve seized

Re: Exhaust valve seized

Re: Exhaust valve seized

Re: Exhaust valve seized

Re: Exhaust valve seized

Re: Exhaust valve seized

Re: Exhaust valve seized

Re: Exhaust valve seized

Re: Exhaust valve seized

Re: Exhaust valve seized