Ktm 300

Where do you live? How old are you?

In most areas, there are age restricted classes (30 - 39; 40 - 49, 50+ for example) where your 300 would be legal to race MX.

Exactly. Many magazines have taken the 300 and converted it to what they called the ultimate Vet MX'er. If that's what you want to do, you should probably look at getting one with the close ratio tranny instead of the wide ratio (M/XC or XC instead of E/XC or XC-W), which also gives you a firmer suspension.

That said, I sure prefer my wide ratio tranny for trails, hillclimbs, etc. along with the plusher E/XC suspension. So I guess it depends on a realistic assessment of the mix of trails to tracks you're planning on.

300 xc is perfect for ya and won't wear you out...unless you want it to!