Scrambler 400 vs 500. I know the 2 stroke and 4 stroke part, but which is faster and which goes 0-30 the fastest?

A 500 4 stroke will be faster than a 400 4 stroke. Same for 2 stroke.

If 0-30 is the only consideration then the answer will be in the gearing and suspension and weight.

Depends on ACTUAL motorcycles with ACTUAL ENGINES SPECIFIED. well tuned Kaw 500 triple can be a dragster yet- 650 Suzi S40 single has good low speed punch from moderate weight, gearing- but other posters note usable top speed of 85mph while old 380cc triple 2 stroke used to top 100mph easily.

Given equal size (displacement) engines, the Two-Stroke will produce more power and accelerate faster because it has a power stroke EVERY time the piston comes up to top dead center, while the Four-Stroke engine only fires every other time.

Parts are not faster then other parts!

bigger difference is rider skill

If you obey the speed limit, you will arrive at about the same time. Drive the one that you like driving.

0-30?

A Honda CR 500 is a bit faster than a Yamaha 450F to that speed depending on gearing. But that is in fractions of a second.

Now a question back- Why do you ask?

I know that knowledge is great but some of it is trivial BS that just fills the brain cells up to leave less room for more important issues.

My 450-4 has more torque than a 500-2 but isn't as fast 0-30, thus one weighs against the other.