yz400 vs 426 vs 450, what's the diff??


15 replies to this topic
  • viggen

Posted November 12, 2005 - 03:17 PM

#1

OK, so I have a 99 yz400 & I just love the thing. Then today at the track I switched bikes with a friends 01 RM250 & obviously they feel TOTALLY different!!

I like the power of my 400 vs the 250 however I definantly felt the RM250 was a LOT more tossable & just felt more nible.

So, are the 426's & 450's more along the lines of the 250 in that they feel lighter & seem easier to turn/manuever etc? I also thought that I sit up a LOT higher vs the 2 stroke thus I am curious if the newer YZ's have a riding position like my 400 or if it's more like the RM250's.

If there is a huge change 400 --> 426 --> 450 I might need to put my bike up for sale :applause:

  • kizzle426

Posted November 12, 2005 - 05:28 PM

#2

I can tell you that the hp goes something like 44, 46, 48. I know I've ridden a 400 and it was a lot slower than my 426. Then, I rode a 450 and it didn't feel a whole lot faster than my 426. It was the tamer 04 though. I think my 426 is quite flickable, but then I wiegh 225 and have a bit of muscle so I don't really care how heavy the bike is. I just don't like 2 stroke powerbands. Anyway....that's my $.02.

  • tacoma426

Posted November 12, 2005 - 10:12 PM

#3

I’ve rode all of the yzf's and all of them are great bikes. The yz450 is a very light and flick able bike but i didn’t like the 4-seed bc I ride a 50/50 mix of trails and mx. So I was sold on the 426. :applause: :ride: :p

  • viggen

Posted November 13, 2005 - 07:24 AM

#4

Possibly the reason the 426 felt so much quicker then the 400 was mostly due to weight? If I recall, the 426 & 450 weigh about the same??

Totally forgot about the 450's only being a 4 spd, that wouldn't work for me either since I like woods riding & hope to do more of it.

hmmm....maybe keep the 400 for another year then get a 06 or 07....

  • kevin204

Posted November 13, 2005 - 07:51 AM

#5

Out of all the modern day thumpers I believe the '98 and '99 YZ400's are the ones to own. They may be heavy and hard to start, but when you weigh 250lbs thats not an issue. They have a great powerband and are stone reliable. I have not had a good expierence with my CRF and it forced me back to 2 strokes.

  • yz_for_me

Posted November 13, 2005 - 08:03 AM

#6

None of the thumpers (regardless of color) will feel like a 250 smoker. That being said, the newer ones ('05 and '06 CRF and RMZ and '06 KXF and YZF) do feel a lot closer to a 250, but still not quite there. Its just a matter of weight. The thumpers carry 10-15 more pounds and it's just not possible to completely hide that weight. They can minimize it's affect by centralizing and lowering the weight, but a thumper will never feel as light and flickable as a smoker.

As far as the '98-'05 YZF's go, the 426 was is marginally lighter than than the 400. The 450 on the other hand is significantly lighter and slimmer than the 426. The 450 will feel much lighter and more flickable than a 400 or 426.

  • DigilubeJay

Posted November 13, 2005 - 08:34 AM

#7

With some valve work and a 444 kit, you can have a 50+hp beast that will give you what you want. Decompression cam takes the hard out of the start immediately.

Put your money in the 400 and I think you will be very pleased.

Here are some interesting Lineaweaver dyno runs of a 444 built by a TT member:
http://www.four-stro...s/SFO_index.htm

  • ksrrider

Posted November 14, 2005 - 09:58 PM

#8

My 04 450 smokes my 01 426 simply because it's 16 lbs lighter and has more power. I also like the power better on the 450 because there is no midrange hit,
it pulls better from the bottom. But I will say, you have to be in better shape on the 450, as it is more demanding.

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • Shawn_Mc

Posted November 15, 2005 - 08:28 AM

#9

Kizzle426, I've been around a long time, and I owned a 426 which was a great bike. But the idea that it was flickable is a laugh riot :ride:

Unless of course youre 6'13" and 350 pounds :applause:

Flickable is the definition of an RM250 though...

If I was going to start spending money on a bike, the 400 isnt it. The 01 426 is a much better bike to throw cash at. The counter balancer problems are solved and the frame is much better. That said, if you really want an eye opening experience go ride an 05 thumper of any model. You'll look at your 400 with utter distain...

  • viggen

Posted November 15, 2005 - 07:36 PM

#10

thanks for the info everyone :applause:

I went to my brothers last night & sat on his 05 KTM 525 & from a rest it sure felt a LOT like the RM250 I rode. I couldn't beleive how much lighter it felt & how much smaller the engine looked!! I figure by far the biggest imrpovement with the newer bikes is they move the center of gravity quite a bit lower.

Anyways, I think I will have to keep the 400 for at least a year then once I am out of debt I will get something new-r :ride:

  • kizzle426

Posted November 15, 2005 - 10:24 PM

#11

Kizzle426, I've been around a long time, and I owned a 426 which was a great bike. But the idea that it was flickable is a laugh riot :p

Unless of course youre 6'13" and 350 pounds :ride:

Flickable is the definition of an RM250 though...

If I was going to start spending money on a bike, the 400 isnt it. The 01 426 is a much better bike to throw cash at. The counter balancer problems are solved and the frame is much better. That said, if you really want an eye opening experience go ride an 05 thumper of any model. You'll look at your 400 with utter distain...

I'm 6' 2" and weigh 225. I can bench around 190. I can also pick the bike up off the ground completely and hold it for a good 7 or 8 seconds. (which if you've ever tried, isn't easy). I'm not saying I'm like the strongest guy in the world. But I don't mind the weight. I can whip the a$$ out and get it flat like no other and corner better than i've ever been able to before. It's pretty flickable to me. I like it, and can "flick" it quite nicely. So I guess it boils down to the person riding it, and how good they are to begin with. Anyway, I guess keep laughing if you think that's funny. :applause: I've ridden plenty of 125 and 250 2 strokes and I just don't like them. They feel a little too light for me, if that makes sense. my bike suits me, and that's what matters.

  • yz_for_me

Posted November 16, 2005 - 02:01 PM

#12

my bike suits me, and that's what matters.


exact-o-mundo. Ride what ya got and have fun. :applause:

  • ARin

Posted November 16, 2005 - 11:37 PM

#13

i will concur with the 2 strokes feeling "too light"...almost like the tires arent planted firmly on the ground...

its an unnerving feeling for me.

  • 00YZ426FMRCD

Posted November 17, 2005 - 07:26 AM

#14

My 04 450 smokes my 01 426 simply because it's 16 lbs lighter and has more power.


Here are the facts:

Dry Weight:

01-02 YZ426F = 231lbs
2003 YZ450F = 222lbs
2004 YZ450F = 222lbs
2005 YZ450F = 220lbs
2006 YZ450F = 220lbs
___________________________

I'll let you do the math but the #'s are: 9 & 11lbs (Not 16lbs) Yeah I will agree the 426 feels heavy as hell but suprisingly, it is not all that much heavier...As someone earlier mentioned if you already weigh 220 + LBS with gear, it is not as noticieable anyway.

Also - Stock for Stock - I have ridden 04 & 05's YZ's & CRF's > I can promise you, they will not smoke my STOCK 426. This is an Urban legend...

  • Butta

Posted November 17, 2005 - 07:34 AM

#15

Let's not negate the technological advances everywhere else on the bike, though. Suspension, turning, brakes, clutches, tranny's, frames, etc, etc. Hands down, a newer (like my '05) bike is FAR superior than a 99 or 01. Why throw money (let's say $2k) into a 6 year old bike, when you can sell it and buy a bike that is better in every aspect (and the complete package is better than the sum of the parts, by far) for about the same amount of cash? I believe that three years old is the magic number for me. When my '05 gets to be 3, I'll most likely upgrade to (hopefully) a new '08 or '09. Cost-wise it just makes more sense to me.

  • viggen

Posted November 17, 2005 - 09:23 AM

#16

yea, when I was riding the rm250 I kept saying to myself... this thing feels like a toy :applause:

I think a LOT of the differences I felt between my yzf & the RM was he had reworked suspension vs my slightly revalved suspension & the rear end needs to be adjusted because there was no sag, thus making my bike handle weird at times :ride:

I do agree, I do not see the point in spending $1000+ on my 99 yz400f which cost me $1600. I would rather keep it stock & save my $$$ to get something newer :p

Every 2 yrs I get a new harley which sets me back a whopping $42.00 & the differences on that overpriced, underpowered ugly chrome thing is huge!





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