ive got an 01 thats piped, jet, filter, cam, few other odds and ends and only problems ive had is broken chain and keeping air in the tires

 

well, just to change it up a bit, I love my 450r. But if your that big I would definatly go with the 700. Im 5'8' 150lb and I make the 450 look kinda small. 450's are really fun to ride but like everyone else says, if ur not hitting the track the the 700.

 

a friend of mine had curtis sparks set his up with pipe/jet/filter/cam. personally i liked the trx 450 over the yamaha 450. not that i dont like my raptor, but i can run most of the 450's i go up againsed in the trails or the drags. but id have to say on a tight track it might be tough throwing a bigger bike around, but you will notice the comfort after a day of long riding on a 660/700 vs the 450's