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Exhausts Exhausts - Headers, Mid Pipes, Mufflers


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February 5th, 2012, 08:47 AM   #11
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Re: Rerouting the entire FE450 Stock Exhaust system?

Pretty much anything can be done.

Look to the under engine routing of the Free ride 350, going into 2 mufflers.

I've not a thorough idea of available clearance under a Sloper 'Berg, but there may be room to make a resonator / Helmholtz chamber (it doesn't have to be 'round' shaped) under the engine, to assist with 'tuned length' requirements. Perhaps there's room for a bifurcating header, through / under suitable gaps. Then, re-merging into one secondary, before the std (location, at least) muffler. Ovalized / 'Cobra head' shaped pipes, 'D' shaped pipes, there are many options in header shape, other than circular, that work well.

The suggestion about the pipe going through the swingarm, brings a smile to my face. I grew up, surrounded by motorcycles. Amongst the many types, my Father and Uncle, kept 'tilting at windmills,' with CCMs. A few of those, ran a pipe, that the end of, went Down through the swingarm, the exit pointing straight to the ground .With either a laughingly minimalist 'muffler', or none at all. Pointing to the ground, it 'sort of' kept sound in check to just ear splitting levels, but when you went over a jump, it was like a WW2 bombardment.

Probably even better, was the dust storm, emanating from underneath the bikes, especially at the start. In dry , dusty OZ events, it was a classic sight, that freaked out a lot of blokes, who had No Idea of what was going on. That, combined with the roost from the, at times , 580 /630cc engines, could make it bloody hard to pass the bikes. In the wet / through water crossings, it was just as hilarious, with Huge steam clouds behind the bikes - remember, people weren't used to water cooled bikes overheating, in those years.They basically, didn't exist.
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March 25th, 2013, 03:11 AM   #12
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Re: Rerouting the entire FE450 Stock Exhaust system?

what did you do with the oxegen sensor or can you do without it I I am doing the same 2009 model 570 I need to know thanks negy
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March 27th, 2013, 04:11 AM   #13
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Re: Rerouting the entire FE450 Stock Exhaust system?

I rang a dealer he Said to run the senser
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May 20th, 2018, 12:27 PM   #14
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Bringing up an old thread here but does anyone know the material type and size for the down pipe? I'd like to build rally low exhaust for my 570.
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