Yamaha also makes a raptor 125 now with a clutch My son has a raptor 250 he is about the same size as your son top speed of his 250 with me following him in my truck is around 57 mph on a level road

 

the raptor 250 does 50-52 and the 350 does about 53-55

go with the 250!

 

Perfect, my son started out on a polaris phoenix. And even was the first bike he ever raced. He raced it in the youth class and would smoke the raptor 250. The blaster is not the bike for any novice rider. Its not very forgiving, and by no means is the banshee for anyone except very experienced riders.

 

i would get him a yamaha blaster, they're pretty zippy and is preety good for trails.

 

HMT......are you serious? a Phoenix smoking a Raptor 250? 200 cc belt drive, heavy as heck, against a light, manual clutched 250? I have ridden a Phoenix before, that is no race quad, unless you modded the living daylights out of it, they are slow, heavy and meant for trail riding, not racing. I would go with the Raptor 250, the Honda 250x and Zuk 250 , much better quads for spirited trail riding and racing.

 

Yea very serious, and yea with a few mods like dynojet kit, exhaust, cdi box, timing advance, open airbox, and shocks. Yea its heavier than the raptor but you can't out shift a CVT. Just saying. But not he races a very modded blaster and will spank 400's all day and really embarrass the 450's. 2012 engine is being built as we speak by Kevin Herr and Herr Jugs Racing

 

I had a Suzuki lt160 that worked when I was like 160-190 (chunky kid) and that had enough power. Now I'm at 165 at 6'4" and have a eiger400. Both suzukis i bought took a beating and still ran great! I know yamaha is a good quad too. I'd personally go with the 350 cuz you'll always want more power lol.