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Ardfarkl Ardfarkl
12/1/2017 7:49 AM

I would like to know the actual difference between a 2003 KX250 pipe and a 2005-07 pipe. Is it actual design/shape differences or is it just mounting points? I have a 2003 and would like. pipe that is only made for newer models. If all I have to do is change the mounting points then cool!

Mike

689

Thanks to all the people that have not beaten me to death yet!

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281moto 281moto
12/1/2017 12:24 PM
Ardfarkl wrote:

I would like to know the ...more

I'd be willing to bet it's shape of the pipe. fitment wise, they're probably near similar but optimized to take advantage of their respective port timings.

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281moto 281moto
12/1/2017 12:27 PM

Also, how the top of the expansion chamber mounts to the frame.

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RGaede RGaede
12/1/2017 6:24 PM

The 05 and up motors use a different exhaust flange. The older motors the pipe went in the cylinder flange, on the 05 and up the pipe goes over.

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KDXGarage KDXGarage
12/2/2017 1:24 AM

It absolutely will not fit the cylinder. Google some images to compare.

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Ardfarkl Ardfarkl
12/2/2017 4:09 PM

Was afraid of that. Thanks for the input everyone! Bummer!

Mike

689

Thanks to all the people that have not beaten me to death yet!

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mattyhamz2 mattyhamz2
12/3/2017 10:25 AM

One slides into the cylinder and the other fits over. They will not work. I was given a few pipes for an 03 and my 05 is totally different

2017 RMZ450
2005 YZ250-sold :,(
1998 YZ250
2005 KX250F

80% of the time it works every time
IG @hammerfamily_4 & @2HRacing
Thanks to : Factory Effex, N2Dirt, Acerbis, DT1, Fasthouse, Matix, FMF, ASV, 100% & Mika Metals

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