Exhausts and Engine » Akrapovic exhaust help please?

I've just bought a used Akrapovic slip-on exhaust for mr RS (this one https://www.akrapovic.com/en/moto/product/15475/BMW/R-1200-RS/Slip-On-Line-Titanium?brandId=44&modelId=715&yearId=4010).
Unfortunately there's no fitting instructions, and I can see immediately there's a bolt missing... does anyone happen to have a PDF copy or one they could scan for me so I can be sure what's what?
Secondly - you'll have to excuse my ignorance, but it looks to me that there are no baffles in it, because I can see daylight down the end - see photo. Surely I shouldn't be able to see through a silencer? I realise I may end up wanting the baffles in or out, but I do at least want to know what I'm dealing with !

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Scroll down on the home page and there are full instructions given
Alan

Zitat von Alda im Beitrag #2

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Scroll down on the home page and there are full instructions given

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I don't know about the Akrapovic, but I have yet to buy an after-market muffler that didn't allow you to see straight through, from one end to the other. Needless to say, they were all louder than the stock muffler and few of them made the bike any faster.

Hello,

Part 2 is indeed the baffle, and it's already installed (you can see the triangular "vents" inside your silencer, so don't look for it). This one has no obturator on the end so, yes, you can see all the way through the silencer.

As far as removing it, it's a bit tricky since the Part 7 bolt (don't look for it, it's already in place) that hold the baffle in place :

1-/ is not aligned with the hole covered by the Part 9 rubber insert
2-/ seems to require a tool larger than said hole to be unscrewed

Apparently some people managed to remove it by enlarging the hole but I wouldn't do it since I don't know how to work with carbon, and I don't want to break the tip. Another solution would be to remove all the rivets, to take the cone out and then set it back in place, but that seems to be a lot of dangerous work too.

Anyway, you should try with the baffle on first, it make a nice deep round noise. I was tempted to try and remove it at first, but then I tried in Dynamique mode the sound was even better (probably due to the exhaust valve opening earlier).

Regards,

Romain

Zitat von Romawo im Beitrag #5

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Part 2 is indeed the baffle, and it's already installed (you can see the triangular "vents" inside your silencer, so don't look for it). This one has no obturator on the end so, yes, you can see all the way through the silencer.

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It's sound absorption through the packing around the core of the silencer. The factory pipe, like most that are designed to last the life of the bike, accomplishes that with mechanical baffles rerouting the exhaust. Which is why they're so much heavier than the aftermarket offerings

Zitat von Freddyfruitbat im Beitrag #6

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I do find that really odd to hear though - I always assumed that any baffle in a silencer worked by effectively increasing the distance between the engine and the exit of the silincer, ie making the sound waves travel round corners. How can my baffles do anything at all!?

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I saw a brand new Akrapovic carbon muffler on a G310GS earlier this year that had the entire end of the muffler blown off. It was literately in shreds. The damage happened while he was riding on the freeway and was not due to a crash. The owner of the bike said that he planned to return it to the distributor and ask for a refund and intended to replace it with a metal version of the muffler.

Hello all, I am mike new to this forum, soon going to be a proud BMW RS owner, I am planning to buy R1200RS -2018 , but i am thinking to replace the stock exhaust with akropovic exhaust.
Need your opinion guys!!
1) should i go with slip ON ONLY or the full system with the headers ? How much difference does it make sound and cosmetic looks wise (And any other performance impact).
2) If i need more output sound should i tell the dealer to remove Baffles/DB killer? Can they do it or should I do it myself?

The full system makes a bit more noise and it seems to pull a wee bit harder through the range, but in real terms it's probably not worth the extra dosh. You'll probably want to remove the exhaust valve motor and fit a Servo Buddy or similar to stop the fault light. I'm running a full system with a PCV, i don't think that I'd want to run a full system with stock ECU. Given that the slip on is only road legal with the baffle in, you might find that your dealer isn't keen to do the necessary. It isn't a difficult DIY exercise.

My R1100S had a cat-back Staintune system. With the baffle tubes out, it was loud. Ultimately I put them back in as a flat twin sounds like a Cessna. It lacks the beat of a V twin or a 180 or 270 degree twin.
And, if you make it really loud it is harder to pass the Police un-noticed, so you speed can be lower...

It is tricky to remove an Akra baffle, but not impossible.

I took mine out on day 1 and I found it impossible to refit the securing screw due to the incorrect alignment of the outer and inner holes as mentioned above.

The securing screw is tack welded at the factory, so not only do you need the right 8mm box spanner or socket to get at it, you also need to apply much more force than you’d expect. But it will come out.

But you won’t get it back in.

So here's new update, i recently bought 2018 1200RS and added the akrapovic exhaust and asked the dealer to remove baffles. But yesterday I found out that he did install the exhaust but couldn't remove the baffles. And technician gave me an excuse that for this particular model we cannot remove baffles.
Is the pipe loud enough without removing baffles? or should i remove them myself?

Zitat von trippyowl im Beitrag #14

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Is the pipe loud enough without removing baffles? or should i remove them myself?

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