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2 stroke Exhaust help.
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2 stroke Exhaust help. - September 17, 2013, 07:38 AM

OK I have not ever had to get a 2 stroke exhaust before and need a little help. I am only looking at FMF, cause I can get a good deal. I have looked at their line and am liking the Q Stealth spark arrestor muffler,025099 and the SST pipe, 0258071. I really don't want more low end but looking for mid range and top end. Also not worried about rejetting since it looks like I need to anyway.

My current one is KTM stock and is cracked, bent and dented enough to I might fix it and keep it as a spare.

Bike is a KTM 2008 300 XCW

Thanks


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September 17, 2013, 07:48 AM

I only know that The Q I had was so long that simply looping the bike bent up my subframe a bunch and the can itself as well. I went with a turbine core 2, which is much shorter, instead so I can continue looping the bike without bending stuff every time. Of course, it might not be the same for your bike...
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September 17, 2013, 07:53 AM

Just looked at the FMF pics for your bike. The Q Stealth looks like it's actually shorter than a Turbine Core 2 but bigger in diameter (assuming the pics are representative of what you'll actually get).
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September 17, 2013, 08:16 AM

Well just found out that the sst you might have to run high octane fuel. Bummer. The gnarly is looking better.


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September 17, 2013, 08:48 AM

I have a fatty expansion chamber you can try. I didn't like it. I lost a lot of the bottom end and that impacted my ability to ride through the woods in the tight rocky stuff.

YMMV.


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September 17, 2013, 08:52 AM

Gnarly all the way.
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September 17, 2013, 08:57 AM

Quote:
Originally Posted by REDLEVEL View Post
Gnarly all the way.
+1

That's what I have on my bike currently. In a *slightly* modified form.
By modified, I mean I consulted with some of the best rocks and trees I could find to get the perfect shape Gnarly expansion chamber.



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September 17, 2013, 09:01 AM

Skip the SST. They run a smaller diameter (than standard) stinger to get a stronger return wave. The result is higher crown temps.

I'm personally not a fan of the gnarly (I have a fatty on my cr5) but either will do.

Q stealth is good


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September 17, 2013, 09:03 AM

Quote:
Originally Posted by KirkRoy View Post
I only know that The Q I had was so long that simply looping the bike bent up my subframe a bunch and the can itself as well. I went with a turbine core 2, which is much shorter, instead so I can continue looping the bike without bending stuff every time. Of course, it might not be the same for your bike...
Q stealth is shorter and fatter then the Q. Its more like a 4t can as far as size.


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September 17, 2013, 09:20 AM

Ok so gnarly and q stealth. Thanks guys goodbye money.


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September 17, 2013, 09:27 AM

I know you'll have the pipe wrapped up but do they have a carbon protector for the Q Stealth?

I mock but I'm picking up a used topar front disc guard after smashing my front brake line recently.
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September 17, 2013, 09:51 AM

Quote:
Originally Posted by KirkRoy View Post
I know you'll have the pipe wrapped up but do they have a carbon protector for the Q Stealth?

I mock but I'm picking up a used topar front disc guard after smashing my front brake line recently.
Not for the muffler but I have an ELine carbon guard for the pipe. At the school this past weekend a guy broke his front brake caliper off on his yami.


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September 17, 2013, 10:02 AM

Don't bother trying to fix a dented pipe. When they blow it back out, the mounting brackets won't line up again. Hang it up in your garage on a piece of wire hanger and call it "modern art".
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September 17, 2013, 10:04 AM

Broke it off? The mounts on the fork broke? Rocks? The topar guard I bought protects the the disc, bottom of the fork, and the brake line (old style line that runs under the fork) but doesn't do anything for the caliper.

Also, I need to get to that school and will for sure do it next year...
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September 17, 2013, 10:05 AM

Quote:
Originally Posted by Zice View Post
Don't bother trying to fix a dented pipe. When they blow it back out, the mounting brackets won't line up again. Hang it up in your garage on a piece of wire hanger and call it "modern art".
I had the impression the shops that do this a lot have jigs for different bikes so they can make the brackets line up.
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