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YZ400FPower

400 to a 426....or just go a Ktm 450?

12 posts in this topic

Hey guys,

I have a beautiful 99 400 with the basic bolt ons. But after a year of ridding I feel like a 426 or a 450. Its just that I want more power and a way lighter bike!!!!!!!!!!!!!!!!!! The bike just frickin dives into corners! Also the bar setup that i have is not right for me.....it came with the bike.The bars are not tall for me since im 6 foot 8 and the bike is scary to take off big jumps. Would it be worth it to trade up to a 2002 426 and put all the goodies from bike on it? Or just get a ktm 450 with some suspension work and a fmf system done to it? I have been told that the ktms are green stickers.

Is it worth it too you?

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I've heard bad things about the reliability of the KTM's. They're supposed to be really good bikes, but what's the point in spending that much money and having a bike that needs more maintenence and probably won't last as long.

I know it doesn't mean anything at a normal persons level, but have you noticed that no one ever wins 250/450 class on one either?

I know they have gotten a few notches in the 125 class, but the top 250 rider is usually back in last place.

Like I said, I'm sure they're good bikes, but I guess I'm just not a KTM fan. Go out and get yourself a nice YZ450 and call it a day.

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I have a '04 450exc and have had NO maintenance issues. keep the valves adjusted and you shouldn't have a problem. Some parts are a little spendy but they seem to be set up well for taller riders.

Granted I don't have any buddies your height but my one friend is about 6'4" and is very happy with the set up on his. He was considering the crf450 but was a lot happier with the set up on the KTM. but it's still not a light bike. but it is lighter than others in it's class with the same options. :):D

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I think KTMs are the taller of the 450s. There's no replacement for displacement! Go with a 450 4 sure.

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Get a different bar set up that fits you better, it could make a world of difference! Tall seat foam, lowboy pegs, tallest bend bars, tripple clamps that raise the bars. I would do all this before i went out and bought a new bike, because it might make you feel a lot better.

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I understand from a colleage who does fork rebuilds for a living, informs me the front forks are troblesome and require a lot of work to keep them up to spec..for what its worth.

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I've actually had the chance to ride all of the aformentioned bikes. I've got an '02 426 and I love it to death. I'm also 6'3". i've ridden a YZ450, and they are awesome. They are faster, but not much. It was an '05, so it was tamed a bit. The KTM was great too, but the shrouds stick out and my knees hit them. It's no big deal at first, but after a while, it hurts a bit. I've also ridden a yz400, and you'll be much happier with any of these bikes, power wise, than a 400. I'm not dogging on them, I just thought my 426 blew it out of the water. I weigh 230, and my bike is perfect for me, but I guess I've got muscle and wieght to push the bike around. It's whatever you want, but that's my two cents, Spend them wisely :)

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I have a stock 01 WR426 (except airbox and bark busters) and I am 6' 05" and 245lbs. The bike has plenty of power for me (it flat out hauls a$$!) and I have not done the mods to it yet. One thing I need to do is get the device (forgot the name) that pushes the handlebars up and out. Sometimes I feel like the handle bars are too close. Take yoiur time with the decision. The KTM's are very nice (and light) but are quite a bit more $$$. Dollar for dollar I felt the WR was a better purchase. IMO

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The 426 isn't much lighter than the 400F if I remember right. If I were you, here's what I'd do:

02 top triple (moves bars forward and up) with universal adapters or aftermarket with the tallest mounts you can find

Windham bend Pro Tapers (tallest bend available I believe)

Tall seat

Lower the footpegs (free, save a little time cutting)

450 cam

Thunder Alley pipe

If after all that you still aren't happy with the 400, then you are way more man than most! :)

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well.the power is great........some of my friends that ride 450's gave it a go and said that it was great. They were surprized and liked the power but hated the front end......i do too. I just know it can be better. I rode a 426 and it felt better in the handling department but power wasnt that huge of a jump. But it was more. I have a FMF powerbomb header and a PowerCore 4 exhaust. That woke it up alot.

If I got a 450 yamaha and put a smaller rear spocket on it would it be better suited for all around riding or is the stoc geraing fine?I would also do the bar setup aswell. Would i be happy with the 04 front end compared to my bike?

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I bet you will not find the jump to a 426 worth the money over continuing to fine tune yours. I have some seat time in a 525 EXC KTM and I wouldn't dog it, but its handling is far more "trucky" than my 426. Motor was nice, but I just spent some time re jetting mine and found a lot more throttle response and more overall power in just a few mods and a little time. This is an expensive hobby, it will be much more so on a KTM, though I do like the bike. On the other hand, If you tear up the 400, 426s are a lot of bike for the dollar. 450s get the limelight, and the new aluminum frame is coming, so you will likely find some real bargains. I did. Good luck.

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