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jsmith811

Does the 450 run hotter than the 250F?

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I'm debating between 250 & 450F, I've never owned a 450F, I do mostly trail riding, some track time, & follow the kids some on the trails, never had an issue with the 250F over heating, would a 450 be any more prone to over heating than a 250F Yzf, given the exact same riding conditions??

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I dont normally let mine sit around idleing, but that is really the only time it should overheat. During break in, I let mine sit for 15 minutes in the middle of July (I live in Florida) it was about 98. So I dont think overheating is an issue with either of the bikes. They are Yamahas, if they boil over, just go ride it.

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Ya, I've owned several of the 250F's.. I was just wondering, given the SAME circumstances, if the larger bore would be easier to overheat or get hot quicker than the 250F. I understand neither size bike can sit an idle.. I guess I"m looking for an excuse "not" to get the 450 and stick with the 250F.

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In all the time that my son and I spent trail riding and other tight spots when he was on the 250F, I can't say that one or the other was more prone to boiling.

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The trails we ride here in Hawaii are so tight, it's literally a first gear jungle and my 450 has never overheated. I have but my bike hasn't...

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The trails we ride here in Hawaii are so tight, it's literally a first gear jungle and my 450 has never overheated. I have but my bike hasn't...

I was going to say that sounds really cool but of course that would be wrong.

I have been riding my 450 here in the desert when I was literally existing on Pocari sweat to keep away the cramps from the heat. Like PK, I was overheating but the bike seemed to handle it fine. By comparison, it handled it much better than my husaberg. No puking at all, just keep the bike moving.

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In all the time that my son and I spent trail riding and other tight spots when he was on the 250F, I can't say that one or the other was more prone to boiling

That's the info I was looking for... Local dealer has one 06 450 left, No 250F's.. and I'm not wanting to wait on the 07's... So I may get the 450 if I can get the nerve up..

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That's the info I was looking for... Local dealer has one 06 450 left, No 250F's.. and I'm not wanting to wait on the 07's... So I may get the 450 if I can get the nerve up..

Go for it.. and enjoy... :thumbsup:

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That's the info I was looking for... Local dealer has one 06 450 left, No 250F's.. and I'm not wanting to wait on the 07's... So I may get the 450 if I can get the nerve up..

If you're thinking that you're ready for a bigger power plant, and you're talking about an '06 YZ450, just do it. There hasn't been a more user-friendly big bike built in 25 years. It's big, and it's fast, and it's a serious race bike, but it's easier to ride than some 250's. You will not regret it.

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