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Performance header/muffler package.

  • Thread starter Thread starter spyug
  • Start date Start date
Been around a long time. Mostly snake oil, a correctly designed 4-1 will give best power and a 4-2-1 will give smoothest torque curve at the expense of a bit of peak power. The X-pipe is neither and doesn't work as well...

Mark
 
We had a very interesting, (and spirited) thread re. these pipes a few years ago, with the manufacturer defending his claims and engineering, here on the forum...a search might bring it up. I recall one GSR member ordered one to take one for the team....not sure how well it performed.
Tony.
 
Not seen him selling these on ebay for a while, just out of morbid curiosity though I would still like ti try one.

Mark...
 
x pipes have been used in nascar with noticeable performance gains. nearly 30 hp on a restrictor motor. that being said, its not very effective. if your bikes running 4-1 right now you'll lose power going to x pipe. it is very specific for it to be tuned correctly. you need to match the intake for the specific range needed. they help to broaden power a little too but with the proper setup. i'm not sure if its even really possible with a bike the set it up correctly.

that being said one thing i have seen alot of sucess with is step tube headers and tri y headers. does anyone know anything of this being done for a bike.
 
litshoot said:
x pipes have been used in nascar with noticeable performance gains. nearly 30 hp on a restrictor motor. that being said, its not very effective. if your bikes running 4-1 right now you'll lose power going to x pipe. it is very specific for it to be tuned correctly. you need to match the intake for the specific range needed. they help to broaden power a little too but with the proper setup. i'm not sure if its even really possible with a bike the set it up correctly.

that being said one thing i have seen alot of sucess with is step tube headers and tri y headers. does anyone know anything of this being done for a bike.
Click to expand...

I agree. It's important to balance all your mods to get the best performance from your chosen pipe.
I seriously looked at fitting a set fo these pipes to the 850 last year. It was too costly to buy and freight a set down here, just as an experinent. But the main reason that i didn't take a punt on them, was that you need to drop the exhaust for every oil change!
 
litshoot said:
that being said one thing i have seen alot of sucess with is step tube headers and tri y headers. does anyone know anything of this being done for a bike.
Click to expand...

Stepped tubes and tapered head pipes accomplish very similar things and have been used for many years by both OEM and aftermarket companies.

The tri-Y is the same as a 4-2-1, is it not? If not, got any pics? If it is a 4-2-1 then it will provide a smoother torque curve than a 4-1 at the expense of a bit of peak power. 4-2-1 are being used a lot on current sport bikes (maybe exclusively, I don't know of one coming with a 4-1 right now), both OEM and aftemarket.

A couple things to note with a 4-2-1 is that it offers more ground clearance than a 4-1 and it is way easier to get equal primary lengths from the 4-2-1 than a 4-1. The 4-1 is still king of peak torque and power, but the 4-2-1 offers a lot for less than max performance applications.

Mark
 
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