Don't know if this has been posted or not.

From MXA
This is the answer to the question that everyone is asking. Ignore the published weights, especially the ones in the brochures. The MXA wrecking crew weighed all four bikes on the same scale. This is what the CRF250, YZ250F, RM-Z250 and KX250F actually weigh (with an empty gas tank, but all other fluids).


2004 250 FOUR-STROKE WEIGHTS

Honda CRF250......216.5 pounds
Kawasaki KX250F.....216.5 pounds
Suzuki RM-Z250.....216.6 pounds
Yamaha YZ250F.....217 pounds


Isn't competition a beautiful thing.

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Amen brother!

Why would they fill it with oil and coolant, but not gas? They should put like 1.5 gallons in each tank so we could get a 100% authetic ready to ride weight.. It's like them measuring the ground clearance without any tires on the rims, or doing a dyno test with someones foot on the rear brake...

Its easy to know when the tank is empty, so its easier to weigh. Tank full doesn't work, then you penalize the bikes with big tanks, and big tanks are a good thing. RTR no gas is the way to weigh.

Add 10 pounds or so to the bike weights if you like to see what they are with a gal and a half. But whats the point? We are interested in weight difference, and adding 10# to all won't change the differences in weights.

What's interesting is the AMA 250 four stroke wieght limit is 216 pounds........I wonder if that wasn't in place how much lighter they could have actually been????????

I agree, weighing ready to go with all fluids and no gas is the way to go. That gives you an accurate weight to compare to other bikes. You could still verify that weight by draining your gas tank easily enough if thats what you wanted to do.

I didn't know the weight limit was 216 pounds. That is suspicious that they all come in at about this weight. Although there is some question on another post about the weights listed on the web. Someone said an actual paper copy of a November issue had the yamaha up another 8 pounds. That could be a typo though. 216 is pretty light, even if a lower limit for racing was given, I don't see how they could lose much more weight without getting real expensive.

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Why does the Suzuki weigh more than the Kawasaki? Is Yellow plastic heavier than Green?

I know that sounds strange but it could be the shape of the plastics just a little more mass,moisture on scale.But it is close enough.

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??????

I understand your question but they never do that because it is easy to calculate.

Add aprroximately 8.5 pounds per gallon.

8.5 lbs/gal can't be right. Water is 8.3 lbs/gal and gas is less dense.

That was an approx with water density man and I even had to convert from the metric system for you guys. Gaz is less dense than water: you are right.

Gasoline is 702.5 Kg per cubic meter. There is 1000 litres in a cubic meter. So 1 litre of gasolin weights 0,7025 Kg.

Just calculate in pounds per gallon if you want to. One pound is 0,454 KG and a gallon is 3.89L

Ciao

702.5 kg/m^3 = 5.86 lb/gal

The weight difference could possably be from the sprocket............The Suzukis still run a steel sprocket on their production bikes....Kawi, I think are alloy........and my friends keep asking me why I'm waiting for the Honda.......The finishing touches and attention to detail......Honda's dedication to every last bolt!

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Are we forgetting about the leaky air boxes and tosted valves? Or the lack of room for an O-ring chain and how the plastic cuts through the frame? All experiances I had with the CRF450

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Well this isn't exactly on point but it does demonstrate what is possible without restrictions. Below are the specs for a 1971 Suzuki 250 Works bike:

Suzuki RH 71 1971
Suzuki's works motocross racer.
Dry Weight: 85 kg (187 lbs)
Engine: Air-cooled 246cc single cylinder 2-stroke.
Bore x stroke: 70 x 64 mm
30 hp, 2.8 kg-m. 5 speeds.

Heads up............MXA latest issue with the Suz-RMZ on the front states that the YZF wieghs 8 more pounds than the KXF.........More specifically that the KXF/RMZ motor is 8 pounds lighter than the YZF motor...........A friend of a friend at Honda E-mailed MXA to ask them what's what?

Gas is 6lbs. per gallon.

who cares the bikes are only like 1-2 pounds away from each other

hondacrf250r
Well I think that was the whole point, maybe they are not all within 2 pounds of each other. The magazines contradicted themselves. So we basically don't know what they weigh. Are you sure they are within 2 pounds? Maybe when the real shootout comes out they will reweigh the bikes and tell us something real.

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On the spot....
Bottom line, its fun to think, compare off stats that are posted...and thats what we are doing, but until riders like us here on TT, actually get a hold of the bike, weigh it...and figure out what the real meal deal is....
No one other than the factory riders have one.
Yamahas should be better off the gate, they have a couple years head start....go figure.
Honda will be pretty solid, think we can all agree to that.
Honda went to school on the YZF, hit a pretty big home run with the 450f...so it will be in the hunt.
I would be surprised if the Honda is head and shoulders over the Yamaha first year. Very Very Surprised. Yamaha puts out one heck of a bike. I have two of the 01s in the garage and they are simply incredible.

Give the Honda CRF some time and let the tuners figure out where that HP and Torque and etc etc is inside that motor (Like they do when a bike is out for a while) then things will change yet once again.

well.....until then on the WWW....arguing about something that aint even here....
Just like wrestling a pig in the mud....pig likes it, you get dirty and nothing is accomplished.

HR