Spark arrestor in a 2019 KTM 450 sxf?

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9/3/2018 6:24 AM

Was at a pretty large race yesterday and a guy with a 19 450 sxf said he removed a spark arrestor type thing out of his stock exhaust after being told about it by another guy with the same issue. Did KTM do this to all these new bikes? If so, is that maybe the issue with the weird mapping/hesitation issue the reviews are talking about? Just throwing it out there since this was the first I’d heard of it.

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9/3/2018 7:23 AM

I removed mine. 16.5 fe. Akropovic

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9/3/2018 7:42 AM

I would remove that spark arrestor and replace the air filter cage with a 2018 2 stroke cage that doesn’t have a backfire screen.

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9/8/2018 6:26 AM

2018 2 stroke cage 250 or 125_

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9/8/2018 10:31 AM
Edited Date/Time: 9/8/2018 10:34 AM

So the race bikes are coming with spark arrestors? Does it say that on the stock can like the old school ones used to have some Disclaimer about the Krizman spark arrestor or something similar?

Or are you guys talking about the dual sport and off road EXC and EXCW models?

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My post is my opinion. If you don't agree with it, I'm OK with it.

9/8/2018 10:53 AM

CarlinoJoeVideo wrote:

I would remove that spark arrestor and replace the air filter cage with a 2018 2 stroke cage that doesn’t have a backfire screen.

Bingo

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9/8/2018 11:19 AM

That screen is not a spark arrestor.
Its there for sound mitigation.

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9/8/2018 11:31 AM
Edited Date/Time: 9/8/2018 11:32 AM

I blew a hole in mine on the first day of riding. Ditched it. Then bumped the TPS up, put the 2 stroke screen in. Replaced the stock slipon with a PC T-6. Its a totally different bike now.

Heard great things about the FMF slip on. Wasn't about to drop $650 for a slip on though.. Kind of ridiculous deal FMF made with KTM to only sell through dealers for a year at a crazy price.

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9/8/2018 12:40 PM

tunedlength wrote:

That screen is not a spark arrestor.
Its there for sound mitigation.

Yep. I don't think KTM or any other manufacturer mx race model comes with a spark arrestor in the pipe.

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Speak softly and carry a big stick.

9/8/2018 7:59 PM

It’s not a SA and the screen doesn’t last long anyway. You will burn it out by the first repack.

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