Akrapovic Exhaust DB Killer Removal KTM Duke 390 125 200 250

[@RokBagorosStuntrider]

Awesome video, will save me a lot of time to explain how to remove the db-killer to my fans :D

[@MotoMirius]

Thanks. Now I have to drill a hole to fit the Akrapovic bung and make it easily removable! 😅

[@gioelemartin8055]

What is the size of the rivets?

[@tinks43]

So it has a removable baffle that isn’t easily accessible for most people 🙈 Great to show how it’s done.

[@MotoMirius]

Lol yes. Turns out it’s a Euro 4 thing. Coming up, how to make it removable 😂. If I can bring myself to drill out a £100 part. Skäl. David

[@zigakos8837]

What would be the best and safe option to get a better sound on duke 125 2022 without changing air/fuel ratio. I dont have rapid bike evo and i dont want to destroy the eingne

[@MotoMirius]

Depends which version of bike you have - KTM were rolling out an emissions update around this time. But KTM note that you can fit the Akrapovic slip on without any change to the air/fuel ratio. Very likely a similar slip on will also be OK. 'Better sound' is very subjective so I can't help you with that. The safest option is to add something like a FuelX Lite (not pro) and then decat to achieve the best sound.

[@Cameravastleggers]

I would suggest drilling a hole that aligns with the screw. And cover the hole up with a rubber plug from akrapovic, just like the previous akrapovic exhausts.

[@MotoMirius]

It is the obvious solution for the option of fitting when needed. I’m not sure why the design changed. Skäl. David

[@Cameravastleggers]

@@MotoMirius the design changed because of euro 4 regulations. Wich states baffles are not allowd to be removable without modification, but they found a loophole.

[@MotoMirius]

Ah nice. The rubber plug is how I intend to modify the stock KTM exhaust to make the baffle removable. Thanks for that 👍

[@MotoMirius]

The db killer I had installed was this one www.pipewerx.co.uk/webshop/accessories/db-killers-baffles/other-exhaust-brands/pipe-werx-baffle-db-killer-to-fit-53mm-straight-outlet-exhaust-silencer/ Similar ones can be bought online. On Friday there will be a new video showing making the db killer removable without having to take the cap off every time - as this damages the cap.

[@MotoMirius]

@Mamun or rashid 53mm is the width. The long DB killer in the video thumbnail is the Akrapovič DB killer. The only advantage to any DB killer is the level of noise it permits - different killers are quieter or louder than others, longer ones are often quieter - none are better.

[@jesse7877]

So when the rivets fall down inside it is possible to get them out through the side that goes into the engine?

[@MotoMirius]

No. they are retained within the exhaust, but they are trapped in the insulation so it is not an issue.

[@tushar4882]

Hey I got an MT03 and an Akrapovic Exhaust. However, it seems impossible to remove the DB Killer from it. Would I have to do the same process?

[@MotoMirius]

I'm not familiar with the version fitted to the MT03 but I'd would expect it to be similar. Worst case, if you can just rivet the end cap back on.

[@Jarheadftw]

Hi David, This has definitely answered my question.

[@MotoMirius]

Sounds good! Skäl David

[@abdelhadidz7657]

Hello david please where can i get the silver thing with X x X on the end of the end can please

[@MotoMirius]

Hi, I've only ever found them for sale at Bagoros Performance!

[@Fuchs1337]

Hello, quick question - the 125ccm KTM duke, and many other 125ccm bikes got a small disk between exhaust and pipe, its to "weaken" the engine. IF you remove this disk - does the engine needs to be new configurated to make it run smooth to the new exhaust flow? I mean, the disk almost covers the whole pipe, its only 5mil to let the gas out

[@MotoMirius]

Hi, with the KTM, it's partly because the exhaust parts are the same as the 390. The issue is that the 125 is only putting 1/3 of the volume of gas into the same pipe as the 390 and part of engine tuning is to use the exhaust to help suck out the combustion gases from the chamber, assisting in sucking the new fuel air mix into the chamber for combustion. If you do remove or reduce the constrictor then yes, you should add more fuel since there will be more air flow.

[@Fuchs1337]

@@MotoMirius appreciate it, thanks for the fast answer!

[@adamismeithink]

This worked for me on my 2023 duke with akrapovic 👍 The rivets were extremely difficult to remove but I finally got them out. Also, the bolt holding the baffle was welded on a small bit but I broke it off ok in the end and got the baffle out 👌

[@MotoMirius]

Excellent work! Yes, the weld can be stiff to remove.

[@Abdul-zq5nb]

How did you break it off there was a screw behind it I got it out but the bolt idk what to do about it

[@MotoMirius]

@@Abdul-zq5nb depends how much access you have. If you have the cap off you can carefully cut into the weld if there is one, and then use a socket or spanner to turn the bolt. Some people have been able to break the weld just with using a socket - don't try and use an allen key into the bolt as it will not be strong enough. With the bolt removed then the db killer can be pulled out - but it will be a bit stuck in normally so will take some effort.

[@Abdul-zq5nb]

@@MotoMirius thanks man appreciate it I’ll use a spanner or socket to try and get it out it’s only hard because i don’t have much access

[@kandudabbeellerflossetheo153]

Hey, Nice video! I recently bought the Akrapovic slip on line, for my ktm rc 125. But the sound is so small because of the catalyst. Where can i find a intermidate for this exhaust?

[@MotoMirius]

Assuming it's the same as the Duke exhaust, you can buy just a cat replace pipe but most of the sound is blocked in the presilencer not the cat. kzbin.info/www/bejne/gKmbXpuei5eDapo The pipes are easily available if you search. I think Leovince do a cat only delete - but I can't guarantee that they fit the RC. Skäl David

[@davecphotographyuk]

Hi, do you know the exact size of the hole where the db killer goes?

[@MotoMirius]

Measure the size of the grommet you are going to use fill it.

[@davecphotographyuk]

Thank's for the response. I meant the widith of the db killer/exhaust outlet. I'm assuming it's 48mm, i measured it with a online ruler, but not sure. I don't have my tools with me right now. Ironically i want to add the db killer 😂@@MotoMirius. It sounds incredible but most of the time it's too much.

[@MotoMirius]

According to the video description its 53mm, but without finding the one I bought a while ago I can't confirm off the top of my head @@davecphotographyuk

[@MotoMirius]

And by the way, it's why I made a video showing how you can make it so you can have it in or out as you want or need. Currently I'm running a stock silencer with baffle because I'm doing some off road riding and that isn't where you want the bike to be loud - time and a place for louder bikes @@davecphotographyuk

[@davecphotographyuk]

Thank's@@MotoMirius

[@jonathangibson69]

In just going to get some little black Torx screw so it easy to get off and on its just a cap

[@MotoMirius]

You can do that. It's just a cap, but a very expensive one! The solution that Akrapovic used until emissions regulations banned them from doing it was to make a hole in the cap - but whatever works for you is good.

[@svivert0594]

Hi, What do you mean by cut of the welding? I dont know how

[@MotoMirius]

For some people, it is possible to break the weld just by turning the screw.

[@svivert0594]

@@MotoMirius if not should i just drill thru it?

[@MotoMirius]

@@svivert0594 No. With the exhaust cap removed just cut the weld with a hacksaw blade or similar until it is weakened enough - don't damage the screw head by using too much force on it.

[@svivert0594]

@@MotoMirius ok thank you so much!

[@motojaymn4131]

Any chance you know where i can get a replacement cap for mine

[@MotoMirius]

Talk to your KTM dealer - they are the only people that can officially supply them. I've seen KTM dealers selling cap online but not for this exhaust

[@barrockerj4766]

You do not have to remove the endcap to remove the silencer. Just remove the Allen key screw that holds it in and it comes right out

[@MotoMirius]

I'm guessing you don't have the Euro4 version of the silencer.

[@sanep4275]

On my exhaust i have a cap that when i remove i can see the screw and remove it so that i wouldnt need to remove the end piece of the exhaust(2011 yamaha r125 carbon akrapovic)

[@Daves_Man_Cave]

Also, you could just locate the where the bolt is, drill a hole in the carbon fiber, unscrew it through that hole and then fill the hole with a rubber grommet. That's how the US spec cans come to us from the factory, so it's not any crazier than drilling out rivets and re-riveting it.

[@MotoMirius]

I suggest you watch the follow up video. The trick is knowing where the bolt is - get it wrong and you are buying a new end cap. Replacing rivets is massively cheaper than a new carbon end cap.

[@Daves_Man_Cave]

@@MotoMirius True, but it's not hard to determine where the bolt is.

[@MotoMirius]

@@Daves_Man_Cave How are you going to determine where the bolt is when you can't see it?

[@Daves_Man_Cave]

@@MotoMirius By watching your video, I could take measurements and get it close enough, and if the hole is a good bit larger than the head of the screw, it won't be a problem. It's on the inside facing the wheel, and it is gonna be covered by a grommet anyway... Just saying, for those that don't want to drill out rivets, get a rivet gun, etc... A small 1/4 or 1/2" hole saw and you could remove the dB killer pretty quickly... I have done mufflers both ways... I used the same method you did on my Street Cup, to gut the stock cans, and then replace the insides with a length of 2.75" perforated stainless steel tubing wrapped in muffler packing material... and then riveted the caps back on. Others, I calculated based on drawings or videos where that screw is, drilled a hole and removed it.

[@MotoMirius]

@@Daves_Man_Cave Yes, you can do all of that. But it's not a process I'm going to recommend that people do when they can spend very little money on a few rivets and a cheap rivet gun and get the job done right, considering that anyone without a rivet gun, likely doesn't have a lot of time and experience doing this sort of work.

[@KeuleHamburg1985]

Hi, can you tell me the part number of the dB eater ? Is it compatible with comparable applications ? What is the outer diameter of the eater ? Regards

[@MotoMirius]

Hi, you can find the details in the video description - Baffle width is 53mm. Akrapovic baffle part number is: K93505999055. It will fit other slips ons that are 53mm and not angled.

[@calebhakains5866]

I have an 890 with the akk full system is it the same

[@MotoMirius]

It will be similar yes. Can't comment as I've not seen the 890 one, but it's the same on other models.

[@Kohtupora69]

what size db killer fits in there? ur links doesnt work and my akra is way too quiet so i need a smaller db killer

[@MotoMirius]

Sorry for the late reply - just filming the update to this video - baffles are 53mm. Skäl David

[@daniellegler646]

Can you please share the part number for the aftermarket baffle you installed in this video?

[@MotoMirius]

There isn't a part number for the aftermarket baffle as they are made to order - I've added a link in the video description. Skäl David

[@fredrikberggrensimonsen4924]

Link to the OEM db-killer? Cant find anyone who fits the akra.

[@MotoMirius]

Talk to your KTM dealer - they are the only people that stock the genuine parts for Akra exhausts

[@chtubing81]

How did that Huge Scratch happen to the screw next to the yellow akrapovic happen OMG (1:06 vs 7:44)

[@MotoMirius]

OMG 😱 OMG 🤣🤣🤣

[@mawmaya]

thats the problem when you modified things. What a shame.

[@MotoMirius]

@@mawmaya No shame and nothing to do with modifications. My bike is ridden, its purpose is to be ridden, not to be polished. Have you seen the stunt pegs on my bike? It gets dropped and slid along the road. It's perfectly possible to modify a bike without scratching it - and if cared, I could have rectified that scratch. Most people will do more damage when the bike is being parked or when someone else hits the exhaust.

[@chiivu1932]

Think akrapovic has used a new method to hold the db killer in the new EU version of the exhaust. ITS melted in there or somthing

[@chiivu1932]

Thats what the ktm dealer told me

[@MotoMirius]

Have you removed the end cap? It’s not possible to see the retaining bolt unless you do.

[@gregvdb6491]

@@MotoMirius I also have the new one and there is no bolt, its melted in

[@MotoMirius]

Greg Vdb have you watched the video? This is the new version with the ‘melted in’ exhaust. Only it’s not as you can see. If your exhaust is different please link me to photos of the end. Skäl. David

[@anderslyshaugen2239]

@@MotoMirius the db-killer is welded at three weldingpoints. I don't know what rules u have in your country, but in norway it's welded since the db-killer isn't supposed to be removed. I haven't taken the carbon cap off of mine yet so i haven't looked, but that is at least what my local KTM dealership told me. I'm going to remove the db-killer when I have the right equiptment, so i'll take some pics and send them over if you'd like to see

[@_azstudio]

my screw accidentally fell inside. is it dangerous

[@MotoMirius]

No. This is why I don't try and remove or fit the DB killer while it's on the bike - the screw will fall inside, but turning the slip on upside down will allow it to fall back out.

[@_azstudio]

@@MotoMirius yeah i removed it while it's attached. ok thanks

[@gir7ffe]

Hi David, which rivets fit perfectly to fix carbon caps back on? (:

[@MotoMirius]

You need to measure what you have if you want the stock look - previous owner replaced the rivets on mine so I can't advise what will give a stock look.

[@manelcambrilsbordes3152]

hey, does anyone know where can I buy a db killer for this exaust?

[@MotoMirius]

Pipewerx do them in the UK, but you will need to buy one of their generic db killers in the right size. I've run two different Pipewerx db killers in this exhaust - the only disadvantage is that they don't have the slash cut like the stock Akra ones.

[@DonMaroney]

Great video glad u added tht it will sound very loud if you've already removed the cat almos did both but would of been too loud

[@MotoMirius]

Cat is the main sound reduction part on the bike, so it does make any other changes much louder!

[@mrskitz338]

Do you know where I can buy a ktm akrapovic db killer?

[@MotoMirius]

Talk to your KTM dealer - KTM are the only official supplier of Akrapovic parts

[@mrskitz338]

@@MotoMirius ok thanks for the quick answer

[@MrPoisonman007]

Nice scratches 👍

[@MotoMirius]

Thanks. Do the job to your own standards. I'm not worried about scratches on an old and damaged can.

[@nnandor888]

Is know somebody size of the rivets?

[@cochorocks]

Hi David do I have to remove the rivets.

[@MotoMirius]

Depends what you are trying to do

[@thelukizucki]

Hey David, great video. I really enjoy your content. Question regarding the db: if you were to leave it in there - how would you modify the existing dB killer? Drill one hole? Two? Or cut it down and if so would you leave the end plate on or not? Thanks!

[@MotoMirius]

Thanks. The answer is all of the above depending on what you want to do. I want the stock DB killer so I can use that. I already have an alternate DB killer - they are easily bought on eBay etc. I intend to buy another - this is much cheaper than buying Akra ones to modify, which will be louder. There is a balance in doing this - the more free flowing (holes, no end plate, shorter) then the louder but also the less back pressure if you have a decat which can hurt performance - so it depends on what you want to achieve. I will be making a video to explain this. Skäl David

[@thelukizucki]

@@MotoMirius Thanks David, looking forward to the video. Enjoy your day!

[@filipkonjevic6945]

Is akrapovic with db killer louder than stock exaust?

[@MotoMirius]

Of course. Exhaust sound is the biggest reason people add slip ons.

[@chungsclapu1728]

Is this for the slip on line because I've seen some things where you can just undo the screw at the top and it pulls straight out would this work as pushing a baffle in because I might need to buy one

[@MotoMirius]

KTM only make a slip on line for this model of Duke - if its a genuine Akra exhaust and it looks like this then this is how it fits. You can drill a hole to access the the screw in the side without removing the cap - measurements in the description, but you do this at your own risk. You don't have to buy a KTM baffle but an aftermarket one will still need to be fitted the same way.

[@chungsclapu1728]

@@MotoMirius yeah he's obviously done that previous to me buying it from him 👍

[@aronsigurdsson6924]

Do you have a link to buy a new carbon cap?

[@MotoMirius]

You can only buy it from a KTM dealer and there are no online links as they will need to place a special order so talk to your dealer.

[@kerfy9060]

what type off replacement screws do i need?

[@MotoMirius]

What screws are you referring to?

[@kerfy9060]

Moto Mirius the ones that you drill out off the endcap, dont you need replacements?

[@MotoMirius]

@@kerfy9060 Yes, but they are pop rivets not screws. Measure the size of the ones you have on there and buy as close as you can to the same.

[@kerfy9060]

@@MotoMirius ok, thank you

[@Kevin-rh4xe]

what kind of rivets are these?

[@MotoMirius]

These are blind rivets - the trade name which most people use is pop rivets

[@Kevin-rh4xe]

@@MotoMirius do you have a link?

[@MotoMirius]

@@Kevin-rh4xe www.google.com/search?q=pop+rivet+black+anodized&rlz=1C5CHFA_enGB712GB712&sxsrf=ALeKk00ZehTRsNfm1B-UhM_WUq3FuNyzUQ%3A1616428858801&ei=Or9YYNK4MNm71fAPofKDkAU&oq=pop+rivet+black&gs_lcp=Cgdnd3Mtd2l6EAEYATICCAAyAggAMgYIABAWEB4yCAgAEBYQChAeOgcIIxCwAxAnOgcIABCwAxBDOgQIIxAnOgQIABBDOgcIABCxAxBDOgcIABCHAhAUUOL3AljQ_gJg8ZADaAFwAngAgAG1AogBjweSAQc0LjIuMC4xmAEAoAEBqgEHZ3dzLXdpesgBCsABAQ&sclient=gws-wiz

[@eirikhage1282]

Great video! Do you know where I can buy a new carbon end cap, mine is broken and I can't find a new you any places ;(

[@MotoMirius]

The only official place you can buy them is from KTM. Talk your your local or online dealer. Skäl. David

[@gioelemartin8055]

What is the size of the rivets?

[@slipkorndiogo]

@@gioelemartin8055 4mm

[@vishnupm777]

Does Removing db killer make it free flow and harm engine??

[@MotoMirius]

Removing will allow more air flow. But the Akrapovic slip is a KTM part which does not harm the engine. For most people there is no problem. To be completely safe you could fit a fuelling piggyback. Skäl. David

[@vishnupm777]

@@MotoMirius like ecu remap?

[@MotoMirius]

You can’t easily remap a gen 2 ECU. You need to use a piggyback ECU.

[@vishnupm777]

@@MotoMirius Thank for the reply🙂🤟

[@gioelemartin8055]

What is the size of the rivets?

[@MotoMirius]

Mine had already had the rivets replaced so measure the rivets on yours and get the closest size and look you can find.

[@gioelemartin8055]

@@MotoMirius thanks

[@gioelemartin8055]

@@MotoMirius Without db killer makes a lot of noise?

[@MotoMirius]

@@gioelemartin8055 Not by itself no. Obviously louder than with. It only gets loud if you remove the cat as well.

[@KrazyKanucker]

Thank you. I ordered an Akra.

[@MotoMirius]

Hope you enjoy it!

[@vickygrover54]

What is the cost of this exhaust for duke 250.

[@MotoMirius]

Check out the price at your KTM dealer - you can only buy these through KTM. Skäl David

[@SapeMelk]

What size rivets?

[@MotoMirius]

You need to measure your own - mine did not have stock rivets

[@SapeMelk]

@@MotoMirius hmmm ok, do i just measure the diameter of the Hole after i drill the old ones out?

[@MotoMirius]

@@SapeMelk Random link to show you. You need the right flange size and the right diameter, length can be quite short. Measure the flange on your existing rivet, then drill out and measure the hole, you will need something a little smaller. www.ebay.co.uk/itm/264773360862?chn=ps&var=564598334478&norover=1&mkevt=1&mkrid=710-134428-41853-0&mkcid=2&itemid=564598334478_264773360862&targetid=1140163973689&device=c&mktype=pla&googleloc=9045932&poi=&campaignid=12128858833&mkgroupid=117045676459&rlsatarget=pla-1140163973689&abcId=9300480&merchantid=113705087&gclid=CjwKCAjw6fCCBhBNEiwAem5SOzAJU4l1-9Y1HF50hzNzRG0ktB4yXVC3hkuS3ycOX7G4O4svDTiR5BoCgSIQAvD_BwE

[@mrbritcoinnakamoto2793]

im very surprised you done use some self tapping screws so you can mod it as an when rather than rivets

[@MotoMirius]

Self tappers are uglier. There is a separate solution to allowing for removal and fitting of the db killer - which is the one Akrapovič themselves chose - before the regulators stopped them doing it.

[@mrbritcoinnakamoto2793]

@@MotoMirius ok yea self tapping screw rank agrees but if you tapped the steel behind then put some hex dome heads it to it it can be reversed at any time that was what I meant but at the time did not have the time for a in depth talk about it

[@MotoMirius]

@@mrbritcoinnakamoto2793 Yes, but you do this instead. studio.kzbin.infoa8SAmhYTSIc/edit

[@shawnanky]

My Akrapovic Muffer got scuffed on the surface and the damage is quite extensive. It looks like a burnt mark and the inner yellow fibres are visible. Any suggestions or maybe a video on how to repair the damage?? Cheers from India.

[@MotoMirius]

To be honest there isn’t much you can do to repair damaged carbon fibre. It’s why protecting it before is the best solution. If you have a source of carbon fibre sheet or tube of the right size you could take the exhaust apart and replace. Skäl. David

[@HeldIntegral]

Or drill to the bolt and cover the hole with a rubber grommet.. You make this so much more difficult

[@MotoMirius]

It's an expensive bit of carbon if you don't get the hole in the right place - and I've seen it done. The measurements are in the description of the video showing how to make this removable (as Akrapovic intended) if you just want to drill it. It really isn't hard to drill out some rivets.

[@bajerpundaren]

Great video

[@MotoMirius]

Glad you enjoyed it. Funnily enough I had the baffle out again yesterday and swapped a slightly louder one in its place.

[@pancake5830]

why did they make it so complicated? seems a bit unnecessary..

[@MotoMirius]

To comply with emissions legislation. Akra are based in the EU so have no ability to avoid a strict compliance with the rules. Same as KTM had to lock down the ECU to prevent the emissions compliant maps being changed.

[@Serveronmc]

Hi again😁 Heard that removing the db killer when using the akrapovic on the duke 390 can harm your engine if you don't have a piggyback. But I have also heard that this I not true at all. Do you know? I have every thing ready to remove it, but can't afford to ruin my 2019 bike😅 btw love this Playlist!

[@MotoMirius]

Hi and thanks. The reason you hear both is because it depends on many factors including where you live and what if any influence that has on the stock mapping. My rule of thumb is that any one change away from stock is normally OK for most people. Once you start to make more than that you need to start considering a piggyback. Generally I think most people are OK with the db killer out of the Akra - a lot of people just stick on slip ons that have no baffles, but you'd be safer with at least one of the basic piggybacks just to be sure.

[@Serveronmc]

@@MotoMirius I se. I'm thinking about buying a better piggyback later this summer, just got to save up for it. Thanks for the quick answer. Keep doing what you're doing!

[@wokeavocado2199]

@@MotoMirius what's a piggyback?

[@MotoMirius]

@@wokeavocado2199 A piggyback is a device which sits between the engine sensors and the bike ECU - it fools the ECU into providing more fuel to avoid lean running. There are laws which cap the amount of fuel the bike ECU can add - this is fine when you have a stock bike, but not when you need more fuel because you have modified the bike - doesn't mean it breaks the emissions laws, though it may. More advanced piggybacks can also change the ignition mapping to improve power

[@giovannicastrovilli3185]

what is the size of the rivets?

[@MotoMirius]

I recommend measuring your own - in practice I end up buying different sizes every time because the suppliers change