Well i have a 1993 300ex. Its great for trails and it great for racing specially for flat track or dragin. All i got in mine is a dg exhuast, jets, kn air filter, and a rev box. the rev box makes my 300 my 300. i clocked my 300 at 70 next to one of my boys cars. so it aint no joke. i got 21's on the front and 20's on the back.

 

The 300ex is a great little quad if you're small, I had when when I was 5'10" and it felt incredibly small, now I'm 6'3" and am happy that I got rid of it.

It is excellent on trails, though I wouldn't recommend jumping it all to high or far.

 

That's true. I would look at a 400EX then. A little more size, better jumper, and 2005's have a new front end and reverse now.

 

mi 300ex can at least do 65 and i race it put a bigger sprocket in back and u will get more speed and a k&n air and a pipe mostly. i have alot on mi bike and i hit at least 17 feet of air on it i have works rear and front supention and the skills to do it and im only 14 im lookin for a sponcer cuse it cost way to much moeny to keep it up to speed so say stock for a will and get some moeny like 2 to 5 grand will do.get that bike a full make over and it will do at least 75 mph.

 

i have a 650 4x4 prairie and young son a 300ex older son ltz400 every body in my family including some others they would rather ride the 300

 

i just rcently bought a 300Ex this year and i love it. it keeps up with 400s and does any trail and hill clmb out there. as mentioned before a few mods for this bike can take u a long way. as for reaching 70 it shouldn't be a problem