What would you say to someone want to move from Quad ATV to Motocross Bike?

YAMAHA YFZ450

go for it! of course your not going to be competitive the next day. it will probably take a season or two to get it down. my son made the jump his biggest challenge was relearning the turns and body position and a high off the ground feeling.if your use to a yfz450 you should adapt to a 250f or 450f nether one is so powerful that its going two blow you off the seat or throw you off unless you have no riding experience at all? 4 strokes are much more beginner friendly then 2 strokes .

If the quad is a Polaris I would say thats a smart move!
Polaris is junk

Buy a Honda

Remember to use the sidestand?

its harder but, funner and its kind of like the weight shifting on your quad, i lean into my turns, stand up and move forward when going uphills and lean back when going down-just like you the tricks -like jumping, powersliding and roosting you will find alot easier-especially when going through water-also if you haven't got as much expirence on a dirtbike and the amount of power as a watercooled 450 DO NOT BUY THE YZ450! it will throw you off and you could get hurt or worse-go for an enduro WR450!-THEY KICK ***!

I would buy a 250F or 2 stroke 250 for your first bike. 450s can be a handful for an inexperienced rider. If your heart is set on the 450, then the best thing you can do is TAKE IT EASY!! Learn how to ride in a field first. Learn how the bike behaves compared to your quad. Take it on some trails and learn how to ride on a variety of terrain. After a few months of practice, you'll be riding it like it's your quad.

I'd say, it's about time! Buy a Honda XR, or CR, or CRF. Don't forget to stick your foot out, dude.

well im a girl and i dont know if you want my answer but i used to love to ride my blaster untill i out grew it and moved to my crf 150. but personally, i love to ride a dirt bike way more and im only 13. so but what do u like more??? dirt bikes look cooler to <3 good luck!!!