Two Brothers Racing Exhaust road Legal at 100db!?

[directorfilms]

Hi people,

So im looking at buying a Two Brothers Racing M7 Slip on Exhaust for my Honda CRF250M. I want a road legal exhaust, and think this looks best, but its 100db!! surely i will be pulled for that on London roads as i commute. so what i want to know is, do you think i will be pulled over for that and also I dont know what 100db sounds like but there is no way of having a listen before i buy it, is it too loud? According to their website all their exhausts are legal on all EU roads, this is what their website says:

[G]

I think it's very unlikely you'll be pulled - even in other areas of the country unlikely.

100db is a lot quieter than many have.

[Alex A]

As above, 100dB isn't particularly noisy.

[ADSrox0r]

Nah that's fine, my Remus GP cans are loud enough to rile the neighbours but never been tugged.
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Current bikes: '08 VFR 800 VTEC(yo) , '07 ZZR1400 Winter hack: '95 Aprilia 650 Pegaso Currently lusting after: RC30

[c_dug]

I have a proper non legal race can and have never been pulled. Though il4's are reasonably quiet at low revs and scream at high revs. In comparison singles tend to thud quite loudly all the time - so you don't have the volume down option like I do.
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I am a bellend, I am a man of constant sorrow, I am a gummy bear, I am a rock.

[Kickstart]

Hi

Greatly depends on how it is measured. The legal limit is around 80db (forgotten exactly). In comparison 100db (if measured the same way) is about 128 times louder. There is a technical offence of modifying an exhaust system to be louder than standard (irrespective of whether it is quieter than the legal limit still), but never heard of anyone on a bike being done for that.

Chances of getting done are slim though.

All the best

Katy
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[Alex A]

[directorfilms]

So it states that its 100db at 4500rpms. As its Homologated and E marked surely it should all be legal. My stock exhaust is 92db at 4500rpms so it is a massive difference. I do want it louder as people definitely take notice when filtering in London.

So sounds like a few of you have aftermarket exhausts already, is 100db loud enough that it would hurt your ears after and hour of riding?

[Alex A]

Your questions have already been answered.

It's not legal (because your original exhaust is quieter), but it's not excessively or unusually noisy, and it's very unlikely to get you in any kind of trouble, or fail an MOT.

[directorfilms]

Cheers Alex A,

I wasn't sure that was the law regarding a louder exhaust than the original stock one. As its all just statements made by people on forums, seems like you have to dig quite deep to get any official info. Anyway thanks for your help everyone.

[Alex A]

See Section 3.1 here.

Specifically: "An offence is committed if the noise of machines with original or replacement silencers would be materially less had the machine been in good and efficient working order or had not been modified."

Plain English: It's an offence to use a replacement silencer if it means that the bike is materially noisier than it was with the original silencer. 'Materially' is debatable, but 8dB is significant.

Personally, I'd be more bothered about the risk of it voiding insurance (or at least, the Police thinking it does), in the event that you don't inform your insurer.

[directorfilms]

Thanks for that! really appreciate it.

So is the exhaust on your bike the original stock one?

I did call my insurance company and they said they would only ask whether it increases the HP and asked if it said 'not for road use' or 'not for road use'

[Alex A]

Both the current bikes have original exhausts, but the R1 won't stay that way for too long.

[Kickstart]

[Rogerborg]

Loud pipes save lives, innit, but I stubbied a spare can for Ze Tractor and almost instantly found it pointless, tedious and highly irritating.

InB4: I know you are but what am I?
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Biking is 1/20th as dangerous as horse riding.
GONE: HN125-8, LF-250B, GPz 305, GPZ 500S, Burgman 400 // RIDING: F650GS (800 twin), Royal Enfield Bullet Electra 500 AVL, Ninja 250R because racebike

[ZX-7R]

I have had people cover their ears when i have been caning it with my race can Micron an i ain't never been pulled over it.Even when i have been stopped none have mentioned the noise level.I just put the stock can on for the MOT.
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Current Bike - 2000 ZX-7R