Whats the big deal with aftermarket exhausts?

[Gazz]

Don't want to sound like I'm asking a stupid question here, but if I am then feel free to close the thread, but I just don't see what the big deal is with aftermarket exhausts? I do; however see the point in improving things but for the prices of some of them (Akrapovic and Yoshimura to name a few) is there really an need? Or is it merely for showing off?

I should also say that I am in no way having a go at people with aftermarket exhausts.

Are standard exhausts so shit that they need to be replaced? And if so why don't manufacturers make them better for their flagship models?

Personally I just see an exhaust are something that gets rid of the gases, and don't really care what they look like, but because they are so popular an aftermarket part, I am wondering if I'm missing something.

[nowhere.elysium]

Noise and bling factor, typically. There are a few examples of bikes that actively benefit from a non-stock can (although this may be apocryphal), but in the majority, it's because people like the noise and the look of them.
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'10 SV650SF, '83 GS650GT (it lives!), Questionable DIY dash project, 3D Printer project, Lasercutter project

[Polarbear]

As above. It's looks and sound for the street bike.

Manufacturers do what they have to do to get it through the legal hoops. We undo their good work
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[Rogerborg]

Look at this chap. Look at his cheery face. Look at his shiny brown brogues.

https://3.bp.blogspot.com/-4vfcuofGwxc/UNhb32swGnI/AAAAAAAAWSw/WH4Z2Pxl_BY/s1600/Bunty_Christmas.jpg

This fine fellow does not have a baffle in his exhaust, and is the happier for it.

Let's leave that sort of underhand wheeze to the scheming, joyless Hun.
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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

[almostthere]

Standard exhausts are pretty good nowadays but most weigh a fecking ton I think a lot of people change for the sound and the weight saving
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[Copycat73]

touch of the "The Kings's New Clothes "... me thinks ...
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[Pol Anorl]

changed mine to a louder one for improved mid range (fzs 600) more noise so pedestrians stop walking infront of me and it weighs a hell of a lot less than the standard one.
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[temeluchus]

On a bike with a mild steel exhaust it is inevitable.

The main benefits otherwise is noise and weight.
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[Polarbear]

Never really got this weight thing if you aren't racing. I saved 5kg on my busa changing the stock pipes to titanium Scorpions but the only difference I could really notice when riding was sound.

Anyway my present bike weighs 300kg, I don't think knocking a few kg off is going to make much difference.
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[Robbeh]

I don't want to get rid of my FZS 600 exhaust for saving weight. It just sounds like a turd in a washing machine.

Sound means a lot to motor enthusiasts. Just try watching motoGP or formula 1 on mute.

I want a nice sound while riding and a bit of presence on the road and for the sake of 300 quid why not if I can afford it. It's not like I'm buying a ford fiesta for 1k and putting 20k worth of shitting sound system in it

[cdlxxvi]

The stock one on mine is so massive and heavy that if I take it off it will knock the planet off its usual axial tilt and plunge us into a new Ice Age. So I keep it on as a favour to mankind. I'm that nice. And why would I bother, as long as it blows the fumes out at the correct end I am happy with it.

[MarJay]

[TheArchitect]

I changed mine for louder sound and better looks.
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[Albigularis]

I think mostly it's for looks and noise. The carbon capped Akrapovic cans and the Yoshimura R77s, both look really nice on a suitable bike.

Current bike has a Racefit Growler on it and I can be heard about a mile away, my neighbour went off her nut when I came in at 2am a few days ago. Feel a bit guilty, but not enough to change it.
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Aprilia RS125 - Kawasaki ZXR400 - Triumph Street Triple R - Suzuki GSXR1000 L3 - BMW R1200GS - Kawasaki Z1000 - Kawasaki ZX10R C1H - Ducati Multistrada 1200 S Touring - Suzuki Hayabusa

[Polarbear]

[ADSrox0r]

I changed the twin underseats on the VFR from the standard Honda boat anchor to Remus Titanium GP and the handling is so much better without the weight up there. That and she sounds like an angry god with that knee trembling V4.

Why? Because I can, and I will.
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Current bikes: '08 VFR 800 VTEC(yo) , '07 ZZR1400 Winter hack: '95 Aprilia 650 Pegaso Currently lusting after: RC30

[stevo as b4]

But messing about with aftermarket or even one off custom exhaust pipes might gain me another 1bhp or so on my KMX, so it's inherently worth spending time and money on them, especially if it's a pipe made up of many rolled cones and welded beautifully, it's a work of art more than a pipe then!

[Pol Anorl]

[G]

[andyscooter]

mainly because the aftermarket replacments are cheaper and batter made then the oe ones

or it is in the case of every one ive bought

£220 for my leo vince stainless steel for my vespa

piaggio wanted £400ish for a genuine replacement that would of rotted again
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[chickenstrip]

I changed the can on the last Fazer to match in with the carb and air box mods. With those, the bike needed a freer flowing, more efficient can. I actually changed the can before the mods were done, and did notice that it seemed to give a little more go at the top end, possibly losing a little lower down, but not enough to make any big difference.

Plus I liked the look of the replacement can, being a carbon finish which matched in with the carbon speed blocks in the paintwork.

The old can weighed a ton compared to the new, but I couldn't honestly say I noticed the difference while riding. The suspension mods I did made a lot more difference, and if you're going to be improving the handling, a saving of some kgs in weight can't hurt things.

And of course, whilst not being the loudest can available, it did sound much nicer.

But if you don't want to spend the money, nowt wrong with that. Horses for courses and all that good stuff, innit
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[BTTD]

Changed the exhaust on my old bmw boxer to save over 10kg, made it sound like thunder, and getting rid of the catalytic converter gained a couple mpg.

Really, the sound alone was worth it.

[Vracktal]

[Musketeer]

If I had a lot of money I would change the full exhaust system not only to improve sound but also to reduce weight.
That cost more money than I'm willing to spend at the moment - Power Commander, full exhaust system, better flow air filter would very likely cost me quite a lot.
So I only got a new muffler for better sound at reasonable price. The bike is still fairly heavy, but it's the best handling big bike I've ever had anyway.
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Current Bike: Yamaha XSR900 Previous bikes: Honda CBR1000RR Fireblade, Kawasaki ZX-6R Ninja, Aprilia RS125 2-stroke

[Teflon-Mike]