Undertail vs. Side Exhaust System?

[Zed]

Aimed mainly at sportsbike riders, which exhaust system do you favour and why - the undertail or the side muffler design?

Personally I think that while the undertail is a tidy finish, the muffler cannot be admired as much because it is not as visible as the side muffler. I enjoy the look of the traditional side muffler, especially the aftermarket look!

In saying that, I think I will always have a soft spot for the old original Ducati 916 undertail exhaust! :yes:

[James Deuce]

Also from a purely technical perspective, the exhaust length is tuned better with a side exhaust, and there's no up pipe bathing the rear shock in heat.

[DEATH_INC.]

I don't mind the original 916/955/996/998 setup,and even the new R1 is sorta ok,but the monkeybutt exhausts on the cbr/zx's looks cheap and crappy.And adds weight /heat etc right where you don' need it.
There will be those that say it aids aero's,but the muffler sits in the wake from your leg anyway,no no real gain there anyway......it's just a trend thing...

[Zed]

but the monkeybutt exhausts on the cbr/zx's looks cheap and crappy.I knew someone would say it! :whistle: Trying not to offend current undertail owner's.

I notice that Suzooki hasn't incorporated the design into their sportsbikes. I wonder why?

[stanko]

I quite like both,
Old saying "Nothing new under the sun"

[FEINT]

Undertail exhaust has a lot more bends and is longer than a side can. Side can also allows you to have MORE storage space! The '05 ZX6R have close to nothing when it comes to storage.

Side Can is better in my opinion. Not restricted by space and it doesn't leave the pillions ass BURNT......

[sAsLEX]

There will be those that say it aids aero's,but the muffler sits in the wake from your leg anyway,no no real gain there anyway......it's just a trend thing...

It would also add weight up high where you dont want it, which is why suzuki made that triangle one on the thouh to bring the weight in closer to the centre while keeping it lower down, plus the shape helps with the aero side of things as well

[Zed]

Undertail exhaust has a lot more bends and is longer than a side can. Side can also allows you to have MORE storage space! The '05 ZX6R have close to nothing when it comes to storage.

Side Can is better in my opinion. Not restricted by space and it doesn't leave the pillions ass BURNT......Hey that carbon Two Bros side can looks familiar!! :clap:

My Blackbird has next to no storage either, and I have two side mufflers!! I have to take out the toolkit if I want to use it as storage, which I do sometimes (yesterday I did)...just hope I don't break down and need to use the tools!!

[Coyote]

I prefur the under engine style. I might be able to make my own system if I got some second hand header pipes

http://www.hillbilly-motors.com/assets/images/GFCartaExhaust.jpg

[zadok]

Undecided. I like both. The undertail certainly looks tidy and I guess in case of an 'off', would prevent damage to the 'normal' side mufflers.
Just a thought: some mufflers on some sports bikes can be quite beefy. There would be no room for the that displacement in an undertail presumably, which would make for different mapping and performance characteristics. Make sence?

[XTC]

I really like the undertail system on the aprillia 450 dirt bike.

[Toast]

Like Jim said, adds weight...and worse still, heating the of the rear shock in some cases...no damping is just plain scary.

Having said that, if buying a new 600, it'd be a Kawi 6R. So long as the manufacturers can do them without suffering too much, I'm gonna complain (the '05 6R supposedly doesn't suffer at all against its competition).

[pritch]

Suzuki designer Hiroshi Iio said,

" First of all we wanted it lower and closer to the centre of the bike, the triangular shape was necessary to acheive maximum banking with the pipe lower. It will now lean to 53 degrees. If you draw a line from the rear tyre up to the pipe you will see how much lean you can acheive because of the new shape that wouldn't have been possible before.
Also the design is much more aerodynamically efficient compared to a more normal style exhaust."

BIKE April 2005

[Coyote]

Plus they warm up your seat, that's a luxury you don't even find on the throne*

*Toilet

[onearmedbandit]

Plus they warm up your seat, that's a luxury you don't even find on the throne*

*Toilet

Oh yes you do, in Japan that is. Wonderful invention it is too. Went to a friends house over there, light turns on when you walk in and the lid lifts up. Push a button and the seat lifts as well. Do your 'business', toliet flushes itself, lowers both the seat and lid. Put your hands under the tap, the water comes on at just the right temp (once again, you touch nothing), move hands under soap dispenser and it automatically deposits liquid soap in your hands, wash hands then dry under automatic hand drier (that feels like it removes the top layer of skin). Leave toliet and shut door and the light turns off. Simply amazing.

[Waylander]

Some bikes look good with underseat, some look good with the side pipe. Personally I like underseat of the R1 or older ducatis but not the ones on the CBR and 636. The underseats kinda balance out the look of the bike as a whole but two side pipes will do that aswell. Just depends on the bike. BTW I'm not one to care about if it reduces the horspower or whatever, if I don't like the look I don't buy it.

[White trash]

That's why you've such an extensive alligator skin handbag collection.

[Waylander]

That's why you've such an extensive alligator skin handbag collection.
This from a guy who wants a job in applying makeup?

[White trash]

This from a guy who wants a job in applying makeup?

No no son, not in applying it, merely judging its application.

Riff Raff's the makeup applier around here.......

[Sensei]

The 916 was made to have underseat mufflers , where as the others have just copyed it & not done a good Job of it . Hate the CBR aftermarket Single mufflers they look Crap . A bike with out a Muffler on its side is like a Woman with out TITS . :motu:

[Waylander]

No no son, not in applying it, merely judging its application.

Riff Raff's the makeup applier around here.......
Uh-huh....:weird:

[Kickaha]

No no son, not in applying it, merely judging its application.

Riff Raff's the makeup applier around here.......


And she practices on you? certainly couldn't make you look any worse :rofl:

[White trash]

And she practices on you? certainly couldn't make you look any worse :rofl:

Check out the beauty shot (http://www.kiwibiker.co.nz/forums/showthread.php?t=14992&page=1&pp=15) , just don't overload the phonelines, I'm booked for the next 3 months.

[justsomeguy]

Definitely exhausts on the side. :yes:

The original ducati design doesn't hide it's mufflers behind layers of plastic like the R1 or 636 or even worse the CBR which looks like it's been stuck on as an afterthought, instead it openly exposes them like a double barrel gun warning anybody who dare try and challenge it to a duel.

The current ducati looks rather too PC….. the 916/748/996 are classics. :love:

However all other bikes look wayyyyyy better with the side zorsts IMO

[Zed]

Check out the beauty shot (http://www.kiwibiker.co.nz/forums/showthread.php?t=14992&page=1&pp=15) , just don't overload the phonelines, I'm booked for the next 3 months.Trash you're a screaming side-saddler! :Offtopic:

[loosebruce]

Yeah 916 etc all good in my books, all the jap versions are lacking, even the R1, too much shitty plastic covers and crap like that around it. Looks tacky, how ever a guy i know with a full akro system on his R1, that looks bloody nice. The honda's and kawkas stock system's are even worse, the yoshi RS5 on Mings ZX is cool, sounds good to but then theres the hassle of numberplate etc.
I've heard all the pros and cons about them, personal preferance i guess, i still reckon a motogp style header pipe out the bottom of your fairing is the bizzo, much like the K5 1000 mod sAsLEX posted not that long ago. I like my muffer on the Gixer, still wouldn't mind a high level conector pipe and junking the pilloin peg, but thats $$$ i dont have at the mo.

[Waylander]

Just a curiosity but what would it be like if you put a straight through pipe with a similar set up like the inside of my pipes (check my baffeling question thread for pics) on a sport bike? Would it affect power or anything like that? Bet it would sound interesting.

[Slingshot]

I love dual pipes on either side...my fav would have to be the pipes on the SP2. Gotta love that angle.

[steved]

Oh yes you do, in Japan that is. Wonderful invention it is too. Went to a friends house over there, light turns on when you walk in and the lid lifts up. Push a button and the seat lifts as well. Do your 'business', toliet flushes itself, lowers both the seat and lid. Put your hands under the tap, the water comes on at just the right temp (once again, you touch nothing), move hands under soap dispenser and it automatically deposits liquid soap in your hands, wash hands then dry under automatic hand drier (that feels like it removes the top layer of skin). Leave toliet and shut door and the light turns off. Simply amazing.You touch the door? Ooooohhhh.

[750Y]

i like the look of those short mufflers that come out just in front of the back wheel. You see them on somegsxr1000 race bikes like the suzuka 8-hour race. can't find a pic tho...

[dangerous]

Aimed mainly at sportsbike riders, which exhaust system do you favour and why - the undertail or the side muffler design?
How about the best of both worlds..... high rise :yes: (1st pic)

[Coyote]

How about the best of both worlds..... high rise :yes: (1st pic)
Oooo. Just like those awesome World Supermoto Husabergs :yes:

[Waylander]

How about the best of both worlds..... high rise :yes: (1st pic)
Wonder what that black one sounds like...:whistle:

[Toast]

How about the best of both worlds..... high rise :yes: (1st pic)

Check out the chicken strips on that second bike...mind you, it must be hard to corner with the plate stuck to the tyre...or do my eyes deceive me? WTF would you stick it there for the photo for?

[dangerous]

Heres another example of a high rise..... sorry lads I had to put it through photo shop 1st, was worried you wouldent see the R1 :whistle:

[Rashika]

Heres another example of a high rise..... sorry lads I had to put it through photo shop 1st, was worried you wouldent see the R1 :whistle:


hmmm ....didn't look like that the last time I saw that pic???? :whistle:


.....the sneaky student wots meant to be working...

[ManDownUnder]

Heres another example of a high rise..... sorry lads I had to put it through photo shop 1st, was worried you wouldent see the R1 :whistle:

R1??



..... 10 fucken chars...

[ManDownUnder]

Aimed mainly at sportsbike riders, which exhaust system do you favour and why - the undertail or the side muffler design?

Personally I think that while the undertail is a tidy finish, the muffler cannot be admired as much because it is not as visible as the side muffler. I enjoy the look of the traditional side muffler, especially the aftermarket look!

In saying that, I think I will always have a soft spot for the old original Ducati 916 undertail exhaust! :yes:

Prefer the look of undertail. Smooth clean lines - overall effect is easy on the eye

[vifferman]

I think I will always have a soft spot for the old original Ducati 916 undertail exhaust! :yes:
Excuse me? :spudwhat:
You should know your Honda history, Zed.
Both the underseat zorst and single-sided swingarm sported by the 916 were originally on the Honda NR (oftentimes erroneously called the NR750), then the SSS was copied by Ducati after it was put on the 1990 VFR750. As a matter of fact, the NR is where the Blackbird's mirrors originated too. :yes:

But I guess, Zed, that you meant that the underseat zorsts on the 916/996/998 look very kewl, as indeed the whole bike does. :Punk:

Just a thought: some mufflers on some sports bikes can be quite beefy. There would be no room for the that displacement in an undertail presumably, which would make for different mapping and performance characteristics. Make sence?
The underseat zorsts also require heat shielding. Usually, what happens is that other underseat space is sacrificed, and/or seat padding is reduced.
It's not just the different muffler volume that makes a difference to the fueling/mapping - there's also a longer connector pipe, which means that performance at higher revs is compromised slightly. Even on my VFR, where it has a higher mounting than normal muffler, the connector pipe is longer and performance is slightly different to having a Satantune muffler in the low-mount position.

There are quite few VFR (apart from the Vtec ones) and VTR1000 owners around the world that have fitted underseat exhausts. Apart from heat considerations, there is some work required to route pipes and fit the muffler in order that the rear tyre doesn't foul it. Fitting of underseat zorsts on bikes that don't have them as standard is entirely cosmetic, and usually results in some performance loss, due to compromises being made to fit them.

Personally, I'm not that keen on the underseat zorsts on the VFR800s - even though they show off the SSS and wheel nicely, they make the tail fatter, and the factory mufflers aren't that pretty. However, dual Satantunes, Microns or Scorpions look very nice, and sound even better. There's even one aftermarket brand (can't recall offhand which one) that has one functional muffler and one fake one, which is lockable for storing stuff in. (The factory system is a 4-into-1-into-2, and eliminating the final split makes the exhaust performance better and the plumbing simpler).

I *do* like the look of the underseat zorsts on the 2005 Triumph ST although they're yet another marque that copied Honda's SSS and underseat exhaust :Pokey:

I reckon that underseat exhausts are a passing fad, and will soon drop from fashion, as there aren't any advantages, and they add complications and weight.

[Zed]

Excuse me? :spudwhat:
You should know your Honda history, Zed.
Both the underseat zorst and single-sided swingarm sported by the 916 were originally on the Honda NR (oftentimes erroneously called the NR750), then the SSS was copied by Ducati after it was put on the 1990 VFR750. As a matter of fact, the NR is where the Blackbird's mirrors originated too. :yes:

But I guess, Zed, that you meant that the underseat zorsts on the 916/996/998 look very kewl, as indeed the whole bike does. :Punk:Nah I don't know my Honda history that well, but I would go as far as to say that the 916 undertail exhaust is more famous than any of the bikes of old, even the NR750 (http://home.planet.nl/~motors-20th-century/drawing/Honda-NR750-1992-ghosted.jpg), and that's what I was thinking when I made the comment.