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2003 klx 300r getting really hot!!!

2003 klx 300r getting really hot!!!

Old 01-06-2016, 06:32 PM
Junior Member
Thread Starter
Join Date: Dec 2015
Posts: 3
Question 2003 klx 300r getting really hot!!!

Wat's up everyone,

I am somewhat new to this feed and had a couple questions.

I got a klx 300r in 2007 and ran perfectly. I let it sit for a while, and when I had the time to ride it again, it wouldn't start (which I expected because it was sitting for a while). I cleaned out the carb, replaced the air filter (uni 2 stage air filter), and checked all the fluids and seemed to be good. After all of that, the bike started right up.

The problem I am having is that the exhaust pipe near the header is getting very hot very fast. If kept on for longer, it would then get red hot.

I have put a lot of cash and hours into this bike to get it running correctly and nothing seems to work. All advice is appreciated and i thank you for helping me.

Old 01-06-2016, 09:11 PM
Senior Member
1st Gear Member
Join Date: Aug 2009
Location: Delaware, Ohio
Posts: 3,397


Exhaust gases running out of that head into that pipe are around 1300-1500F. There is no insulation between those gasses and the single wall pipe. Now think about it. The exhaust needs air passage over it to cool it. Unless the air is passing over it, it will heat up easily to a red glow.

No one can change that, period. Best thing to stop the glow is to simply ride it - the air over the exhaust cools it enough to stop the glow. Easy fix, isn't it?
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