Stock exhaust - why big and heavy

[Big Kev]

There have been many posts on replacement exhausts. I have tried a Two Bros and am back with the standard as I find silence is golden.
What bothers me is the shear size (length) and colossal weight of the stock can. Is there anyone out there that has inside info as to why KAWA chose to make the can so long and heavy. Some of the theories are:
Needs to be that size/weight to get decibels down.
Needs to be long so fumes are not pulled up to rider.
Needs to be long to avoid sound bouncing off panniers
etc etc.
Anyone know the real reason why KAWA produced the most talked about can on modern bikes ?

kev

[Hitman]

I think it is mostly due to having to comply with Euro 3 Exhaust emmisions. Euro 4 is stricter and came into force Jan 07 so if they ever had to comply with that we probably would have had two bazookas on the bike. You may have noticed that most if not all modern bikes now have much larger exhausts as oem fit. Take a look at the Fazer it is almost identical but just a bit smaller.

[kezbo22]

have you seen the new busa???? same bloody exhaust i reckon!!

[gtr14greg]

while riding with someone on a GSXR1000 the other day, I noticed that the two cans on it are about equal in length as the one GTR can.


G2