Just a word of advice. I searched the net for quite a while deciding which exhaust to fit to my FZS600. I wanted something a little fruity sounding but still road legal and opted for a Motogp carbon stubby from SP Engineering. Its a lovely exhaust. Good quality and well priced. The advert for the item quite clearly stated 'Road Legal'. However, when I took it for a recent MOT I got an advisory for the exhaust being loud (yes, the baffle is fitted). In fairness the exhaust is pretty loud but not what I would call offensive and especially not at 'tickover' which is the only revs the MOT tester heard it at.I took this matter up with 'SP Engineering' and they stated that they didn't make road legal exhausts. The BS stamp means that the exhaust conforms to british standards in its materials and construction allegedly. Not that it is road legal. This is very annoying considering I would have purchased from a different manufacturer had I not been mislead at the time.Besides, I have found that loud exhausts sound awesome up to a point but can also become a pain in the arse on longer rides so choose wisely
Quote from: Lez72 on 25 September 2013, 06:08:48 pmJust a word of advice. I searched the net for quite a while deciding which exhaust to fit to my FZS600. I wanted something a little fruity sounding but still road legal and opted for a Motogp carbon stubby from SP Engineering. Its a lovely exhaust. Good quality and well priced. The advert for the item quite clearly stated 'Road Legal'. However, when I took it for a recent MOT I got an advisory for the exhaust being loud (yes, the baffle is fitted). In fairness the exhaust is pretty loud but not what I would call offensive and especially not at 'tickover' which is the only revs the MOT tester heard it at.I took this matter up with 'SP Engineering' and they stated that they didn't make road legal exhausts. The BS stamp means that the exhaust conforms to british standards in its materials and construction allegedly. Not that it is road legal. This is very annoying considering I would have purchased from a different manufacturer had I not been mislead at the time.Besides, I have found that loud exhausts sound awesome up to a point but can also become a pain in the arse on longer rides so choose wisely So what about their FAQ's section that says this:" 4. Can the exhaust be used on the road?All our exhausts are supplied with removable baffles. With the baffle fitted these cans conform to British Standards and can be used on the road. Our 300mm & 380mm exhausts are BSAU marked."I carry this section around with me on paper so if i get any comebacks off it then my finger will definitely start pointing at them.It was the main reason i bought it because of the markings and the above statement!!! I know what you mean about the noise though, that's why i put the Quill one on occasionally to give my ears a rest!And i tried the Moto GP for about 5 seconds the other day without the baffle in and that's just a complete no no as well.
I got an advisory the first time i put it on but he never saw the BSAU stamp and after i pointed it out he apologised and passed it the next time, no problem.I wonder how you stand legally if they are selling it as road legal but they may not be?As far as i'm concerned i bought it in good faith, but apparently due to false advertising.Also, if they're telling you on their site about track regulations and excessive noise, but they're not road legal either, exactly where the bloody hell are you meant to use it then???
Decided to contact SP Engineering myself and see what they had to say, this is how it went: Hello there, there’s been a bit of a discussion on a bike forum I use about the legalities of your exhausts on the road and was wondering if you could give me a definitive answer?I know your website says “BSAU marked Road Legal” and I purchased one of your Moto GP end cans because of this, but rather than having that nagging doubt in my mind I thought I’d ask the question direct.Many thanks Darren SilvesterHiMany thanks for your email, Please confirm the make, model, and exact model of exhaust we have supplied?I bought the stainless Moto GP (stubby) for my Yamaha FZS 600 These are not marked road legal although have db killer for MOT use. The XLS range is slightly chunkier, (100x300) these are BSAU marked.Hope this helps. Mine does have the BSAU markings.I haven’t had any problems with MOT’s and I’ve never ridden on the road with the baffle out as it sounds a bit too lively, as you know.I wasn’t aware of any exhaust can actually being marked as “road legal”, or are you saying that the BSAU marking is enough as far as the police are concerned? Exhausts are very GREY area! no stamp is required for MOT, would need to check with law, each application or view of policeman can vary!Kind regardsDavid Pepler SP Engineering Motorcycle Exhausts & Accessories Ltd Unit 5 Keyford Court, Frome, Somerset, BA11 4BD So, pick the bones out of that? Not really the definitive answer i was looking for but i do appreciate that some police will overlook things, whereas if you've just flown past them at 140mph then they might not be as forgiving!I think having the BSAU markings is a huge bonus if they do get a bit funny though, and i will continue carrying my paperwork stating that it's okay for road use with the DB killer fitted.
The reason that Harleys scrape through the noise regs is due to the firing order of the engines and therefore the tone of the exhaust. Its due to the fact that it is not a constant drone and is more intermittent. Whereas an inline 4 has a constant exhaust note at any given rpm.