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hey guys,
posting on behalf of mark m. as shown in the pics, he's got an s4R. not satisfied with what was on the market for exhaust systems, we set out for something a bit different. i helped with some parts & info, but this is mark's work, and pretty sweet at that.
the exhaust is derived off a SBK's for the bump in header diameter from the standard 40mm to 45mm and the removal of the "BULGE". notice the x-over's nice and LOW in the system to not break up the lines of the headers rising up to the cans. the cans are right in line with the frame and tie into the frame just as the stockers do for simplicity. they're reworked 748 bits with perf'd cores that mark polished to a nice POP!... the bike sounds pretty [email protected] mean, i'll say. airbox's open and fuel's taken care of via PCIII.
clutch cover's a ben-fer bit that'll stay until mark comes up with something of his own (work in progress).
moving to the tail, mark made a billet bar to go across the end frametubes (didn't want to hack the frame) and the "beertray" is a plate of carbon. the rear sig's are hidden in the cowl.
all in all cool stuff, and more to follow. monsters are never "DONE" afterall...

to save the agony of dial-up, i'm posting small versions of the pics here. under each pic there's a link to larger versions. enjoy!


http://www.ducatipipemod.com/s4s/MarkM1.jpg


http://www.ducatipipemod.com/s4s/MarkM2.jpg


http://www.ducatipipemod.com/s4s/MarkM3.jpg

close-ups...

http://www.ducatipipemod.com/s4s/MarkM-1.jpg


http://www.ducatipipemod.com/s4s/MarkM-2.jpg


http://www.ducatipipemod.com/s4s/MarkM-3.jpg
 

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FARKIN ABSOULUTELY BEEEEEEEEEEEEEEEEAUTIFUL WORK.I am now officially jealous and want that. I especially like the tail mod. The bar with carbon is a good idea. Was the carbon hand made or bought? At any rate looks great.

Quack.
 
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That tail section is top notch, I want one NOW, NOW NOW NOW NOW NOW NOW, damnit did you hear me, NOW :D

Those pipes look the part and I bet they sound great. Absofreakinlootly beautiful work to whomever touched that monster!

You guys make me sick and I hope you get a rapid case of crabs for making mine look so bad and simple

;D All In Love

Liter
 

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Thanks, I'm pretty happy with it too. The carbon fiber was
purchased from a custom knife supply co. It's very easy to
work with and is about .1" thick. I am not to sure how UV
resistant it is though. Time will tell. I am out to wake up
the neighbors for the first time and see how it runs. We will see if they like it as much as I do. Thanks Strati
 
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Discussion Starter #6
if there's enough interest, i could chat with mark off-line about doing a run of his tail section "kits". sounds like liter's in for one ;)
the full exhaust is a bit more involved of course... i think mark was planning on making one more system "just in case" for his own bike, but i'm not sure if he'd be up for multiple productions.
 

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I would be interested in seeing a close up of the carbon piece. I am planning something similar for my tail and this may have saved me the trouble of making a mold for a carbon beer tray.
 

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HOLY BALLS BATMAN! That's some nice work! Considering that I don't have a tail on anymore, that kit is out. But the pipes...the pipes I would be up for. I'm thinking of the canister's on each side, in carbon. I want to get that done sometime over the winter. Mark, if you're up for it, let me know man, my business is yours! Nice ride!
 

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DEFINATELY MARK ME DOWN FOR THAT TAIL MOD. THE DUCK LIKES MUCHO MUCHO. ABOUT HOW MUCH TIME BEFORE PRODUCTION IS TO START. I WANTED MINE YESTERDAY. IS IT READY YET? HOW ABOUT NOW? NOW? READY YET? i'M WAITING.
 
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DEFINATELY MARK ME DOWN FOR THAT TAIL MOD. THE DUCK LIKES MUCHO MUCHO. ABOUT HOW MUCH TIME BEFORE PRODUCTION IS TO START. I WANTED MINE YESTERDAY. IS IT READY YET? HOW ABOUT NOW? NOW? READY YET? i'M WAITING.


+1


GIMME GIMME GIMME

I will trade stock parts for stuff like this ;D
 

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Strati,

The last three links come up as the small versions....

You might want to delete the "-t" on those URLs.
 

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did you notice any new flat spots or elimination of old
ones by changing the stream-wise location of the
cross-over?
 
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Discussion Starter #15
Do I see a cross-over there?
yep... you can make out the top of the cross-over in this pic:
http://www.ducatipipemod.com/s4s/MarkM-1.jpg

i'm gonna try to buzz by mark's tomorrow and will see if i can snap some more shots of the system. another cool thing about how he worked out fitment was how the front cylinder's header is routed. hugs the engine pretty nicely.

Is anyone else making a system with a cross-over?
sil motor & arrow's both have cross-overs. but they're later on in the system, up by the rearset. i think this is cuz it's just easier to manufacture a cross-over in a straight section of tubing rather than along a bend.

What kind of benefits can he expect from the diameter change and is that unique to this system?
the sil & arrow systems are also larger header diameters than stock. i think they're 45/50 systems. this is a 45 all the way. stock's 40mm.

When's the dyno run?
mark?
 

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alright strati and Mark. I have given you eight hours. where are my pipes and tail mod plate? STILL WAITING. GETTING KINDA TIRED. IOJAJGKLJS'G J":GJ'KLjlvkj WHAT MUST OF FALLEN ASLEEP WHILE TYPING. IS IT READY NOW?
 

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Have you seen the one JHP have done in the UK-i`ll try and post it.
Just noticed Grunter has posted it above me!!!!!!!!--thats the 128bhp at the rear wheel one
 
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hi all, viv cowley from V-Tech, I feel compelled to point out that the S4R pictured is not fitted with a JHP system, but in fact a full V-Tech system using modified Termignoni cans, the system is made from 45mm outer diameter (18swg 304 stainless steel) with the balance window at 28" from the merge point on the header, this bike was fitted with a PC111 and a K&N and produced approx 128hp at the rear wheel, it also has a nice flat torque curv, the owner has exspressed his feelings on the improvement in performance in words that would not be aproperiate on this forum, needless to say he is very happy with the result,
 
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