that crazy new Akrapovic WSBK exhaust

very interesting plumbing, obviously lengthening collectors as much as possible before merging, then staying as a 2-1 exhaust all the way to that periscope exit.

I've been talking with a custom exhaust builder; we don't have the measurements to do a replica, but some of the ideas are interesting and we might try them - like the rear collector appears to be reversed....?

Are you going to do it in ti?

I will be impressed if you follow thru

Sounds expensive. Just curious but what are you hoping to gain above whats available out there now? Seems like for most of us mortals any exhaust out there now is more than enough.

I've been looking at in, think if they were not bound by rules relating to the production bike we would see full under seat exit, this current Akr factory set up is obviously still a compromise since they still have extiisting cans + the periscope, bet the cans do little except serve the rules !!!
I'm still thinking about building, I fab lobster style hand rolled exhausts in Iconel 321 etc, I would start off with my SSTK Term' system front pipe is already close to full length, it's the rear that's still to short hence the factory rear running RH outside swing arm,
If I eliminated the cans then use that area for a proper sized 2-1 building the proto 1st in reg' steel to speed up fab process prove concept, fit and assembly jig.
The reverse engineer with REVCAD to produce all the forms for the real system

Why It's just passion thing, + fueling & torque will improve with corrected length headers

My understanding of the new exhaust isn't that it makes more outright power, the longer pipes give more midrange power. Remember they're not able to use 1299 motors; they're stuck with the original 1198cc Superquadro.

"This bike has too much midrange punch", said no Ducatisti ever.

I need to get a better look, but it looks like the rear collector coming off the rear cylinder goes straight out and to the *right* (instead of the left as on our bikes), makes more of a 90 degree bend, goes straight across the bike, and then down into the left-side "can".

Or maybe it comes out the same angle as the street bike, but then bends to the right to get that longer crosspipe section before going down into the left-side can.

The merge with the front pipe happens somewhere before the left-side can. The rest is visible - the exhaust flows to the front, loops into the right-side can, and then comes out the periscope.

It's true though - without having to use cans and just using straight pipes, you can loop around more under the engine and get a lot more length.

Looking at glimpses of yesterdays video Laguna Seca I could not see any outlets on the Can's appeared as they used as flow through mufflers ? then 2-1 again to the periscope outlet with small end Can terminated almost flush with rear exh' bend, read some where they is a flapper valve in the system, guessing for sound control as they are fairly quiet in the pit lane but very raucous down the straights.

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Can's are off but good view

So are you going to spend more than $2000 ?

Question for kissmet

Have guys also noticed the rear shock is installed in reverse direction? I wonder what that does for improvement?

I would prefer a simple MotoGP style piping, where the front cylinder comes out by your right foot and the rear cylinder that exits out of the tail. This is just too much piping for my liking.

Maybe the tips can be muffled a bit so it will emit 105 DB instead of 120

Special reversed Shock is to reduce unsprung weight

BadBoyBeltran said:

I would prefer a simple MotoGP style piping, where the front cylinder comes out by your right foot and the rear cylinder that exits out of the tail. This is just too much piping for my liking.

Maybe the tips can be muffled a bit so it will emit 105 DB instead of 120

Click to expand...

I understand form simplicity and looks 2 individual pipes, system needs a 2-1 or 2-1-2 for the torque 2 individual pipes will loose too much mid range

bradp51 said:

So are you going to spend more than $2000 ?

Question for kissmet

Click to expand...

Must be joking looking at $1500 just for the material

MotoGP bikes probably control backpressure with valves then eh?

sean999r said:

I understand form simplicity and looks 2 individual pipes, system needs a 2-1 or 2-1-2 for the torque 2 individual pipes will loose too much mid range

Click to expand...

MotoGP are all 16000 + rpm engines probably racing usable range top 5k so going individual saves weight especially plumbing on a V4 who knows what valves they are using
So few details & photos out there