1100S exhaust mods

[MountainFergus]

Hi.
I have an '09 Monster 1100S and I'm considering my options regarding exhaust.
My first question would be:
Do Evo pipes work for my bike?
Second question:
Has anyone here gone from stock headers to 70 mm?
Thank-you.

[stopintime]

70 mm is probably pointless. Only if the intake and combustion required 70 mm to be in harmony. An 1100 two valve bike won't get around the corner if it was tuned to a degree where it needs 70mm.

There's a sticky thread about 696/796/1100 exhaust mods.



.... and: welcome

[Speeddog]

I don't think there's enough horsepower there to need 70mm.

One of my customers has a HYP1100Evo, it has a super nice aftermarket exhaust, from memory it tapers up from stockish to *maybe* 50mm.
I can get more accurate numbers, as I've got a slightly squarshed lower headpipe in my exhaust bin.

[MountainFergus]

Thank-you.
In this case it's not for power.
It's for sound.

[MountainFergus]

If bigger headers are not practical or sensible, who makes the deepest sounding exhausts for my bike?

[stopintime]

Deepest bass rumble: two large carbon fiber cans  Termignoni, MIVV, Spark a.s.o.   See the semi official 696 + exhaust sticky thread.

[Speeddog]

~~~SNIP~~~
I can get more accurate numbers, as I've got a slightly squarshed lower headpipe in my exhaust bin.

40mm at the head, tapering up to 45mm about 150mm downstream.

[geoffduc]

Have a look at Sparks carbon twin can set up which comes with pipe work that gets rid of the flapper valve, it's a beautiful system that's a lot neater than termi's and sounds awesome plus it shows off the rear wheel rather than hiding it which some replacement systems do.

Geoff... 

[MountainFergus]

Spark has an under-seat system for EVOs...
Love my Arrow cans, and I know cans with bigger inside volume will tend to be deeper. The trademark Ducati boom is good for my ears and my spirit, especially in the mountains where I live.
SP Engineering has 'big bore' cans, stubby and full-length.
Would prefer something carbon and Italian, but not dead set on the latter. Does Termi offer big bore slip-ons?
Thanks, Speeddog, but if they grew to 70, that would be more compelling.

[Speeddog]

Just out of curiosity, how do you plan to route some 70mm pipes?

[MountainFergus]

Not entirely certain, but I was counting on my good old Scottish ingenuity to find a way.
Through the frame with a removable oval section maybe, or giving up the under-seat configuration if I had to.
A good, creative fabricator and I could find a way, I think, but I'm willing to compromise.
If I have to resort to the biggest, deepest slip-ons I can get with the current pipes, that wouldn't devastate me or anything.
It's not that I'm disappointed in how it sounds.
The Arrows I have now with db killers out already sound very good.