SS Akra - BMW G310 R/GS Forum
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post #1 of 25 (permalink) Old 02-12-2019, 08:00 AM Thread Starter
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SS Akra

I just installed the stainless steel Akra and it is really greatly made. However, the sound with baffle in is a bit too low. Has anyone tried to remove the baffle? It is not so easy in this system.

I cut the attachments from the stock pipe, welded them, and bolted in the oem heat shield. works very nice.
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post #2 of 25 (permalink) Old 02-12-2019, 08:44 AM Thread Starter
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by the way the, SS is so much nicer than carbon one. the carbon is going to crack anytime if you hit a stone, or just without any reason.

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post #3 of 25 (permalink) Old 02-12-2019, 12:18 PM Thread Starter
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the baffle is not see through, like in carbon version. the only way I see to open it, is to drill through or burn hole with the welding stick. but then there is no way back.

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post #4 of 25 (permalink) Old 02-13-2019, 04:13 AM
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I just installed the stainless steel Akra and it is really greatly made. However, the sound with baffle in is a bit too low. Has anyone tried to remove the baffle? It is not so easy in this system.
Wow, the heat sheild looks nice and well executed. Wonder why they did not included that in the Akra system.



BTW i have just installed the carbon fiber one on my 310GS and even with baffle ON, its makes so much sound that i want to reduce it. Much easier to remove the baffle there, and without baffle, its really really loud where one would need earplugs for sure. I guess the cat con on the SS Akra would be muffling the sound.
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post #5 of 25 (permalink) Old 02-13-2019, 06:16 AM Thread Starter
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Wow, the heat sheild looks nice and well executed. Wonder why they did not included that in the Akra system.



BTW i have just installed the carbon fiber one on my 310GS and even with baffle ON, its makes so much sound that i want to reduce it. Much easier to remove the baffle there, and without baffle, its really really loud where one would need earplugs for sure. I guess the cat con on the SS Akra would be muffling the sound.
The SS Akra is more quiet with DB killer than Carbon version. The carbon slip-on baffle is hollow inside. I would like just a bit more sound, but it will be for sure better for my failing hearing to leave the baffle on.

as to the shield, you can easily fix it yourself. just cut the old connectors from the small shield and weld them in the Akra. I payed 2 usd for this job, but in your country it might be a bit more

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post #6 of 25 (permalink) Old 02-15-2019, 10:05 AM Thread Starter
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after getting used to it, I am very happy with the sound of stainless steel Akra. it is more quiet that carbon version ( with db killer) but it is still very nice and of a much higher quality than carbon one and looks amazing. i have like 6 bikes with aftermarket exhausts, but this one looks the best.

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post #7 of 25 (permalink) Old 03-13-2019, 04:53 AM
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after getting used to it, I am very happy with the sound of stainless steel Akra. it is more quiet that carbon version ( with db killer) but it is still very nice and of a much higher quality than carbon one and looks amazing. i have like 6 bikes with aftermarket exhausts, but this one looks the best.
I should have maybe opted for the SS akra, but as per the specs the ss was much heavier compared to carbon and did not make much performance difference. I am running on the Carbon akra with baffles inplace, still the noise is a bit too loud for my liking. Guess will have to live with it.
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post #8 of 25 (permalink) Old 03-20-2019, 11:58 PM
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@Kris I have the SS Akra as well, was too quiet with DB killer, much nicer and deeper sound now without the DB killer and not excessively loud at all. Since I couldn't get any info online at the time, I asked the shop I bought it through to do the conversion. In short, the db killer is attached with a bolt in the same manner as the carbon version, only difference is that the bolt is not exposed under the carbon cap. So theoretically, you will need drill through the carbon end cap, inline with the bolt, and then use a good quality Allen key to break a spot weld which keeps the bolt in place. Add a rubber end cap and you have converted your Akra back from Euro 5 to Euro 4 standards with a removable baffle

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2017 Black G310GS
2011 CBR250R
2007 BMW F800ST
2006 Kawasaki ER6F
2006 Bajaj CT100(cheap training bike)
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post #9 of 25 (permalink) Old 03-21-2019, 12:24 AM Thread Starter
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Originally Posted by nasirkaka View Post
I should have maybe opted for the SS akra, but as per the specs the ss was much heavier compared to carbon and did not make much performance difference. I am running on the Carbon akra with baffles inplace, still the noise is a bit too loud for my liking. Guess will have to live with it.
francoisps, Thank you the clip. So you did manage to remove the db killer? i thought before that it is not bolted but welded. do you have also the catalytic fitted? this would make the bike really quiet. I don't have one. I actually enjoy the quiet sound, with gentle beat, as in all my other bikes I need to ride with ear plugs. but a bit louder sound could be welcome.

the problem with accessing the db killer is that one has to drill the rivets, and I don't have spare ones. your bike does sound very nice. where did you get the rivets?

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post #10 of 25 (permalink) Old 03-21-2019, 07:30 PM
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@Kris The shop i took it to managed to remove the db killer. They didn't want to drill a hole in the carbon fiber end cap, even though I requested this so that I can put the db killer back if I needed to. They instead drilled out the rivets. I anticipated this and bought blind rivets from Akra via their local distributor in AU. The rivets are called p-br 1. I didn't like the "metal" sounds(typical BMW) with the db killer installed. Also wanted more low rev sound for helping with awareness when going through traffic, I found with the DB killer installed the bike was only noisy at high RPM, not great for traffic. If you can line up the hole you have to make in the carbon end cap with the bolt, you have a fair chance of getting the baffle out without drilling any rivets.

It is mildly noisy when riding without earplugs but I ride with earplug all the time anyway as wind noise in a helmet is damaging to your hearing and also increases fatigue. I do love the added sounds especially the popping sounds when engine braking.

I don't have a cat fitted. cat would make it quieter but also add weight and decrease performance.

2017 Black G310GS
2011 CBR250R
2007 BMW F800ST
2006 Kawasaki ER6F
2006 Bajaj CT100(cheap training bike)
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