http://spokane.craigslist.org/mcy/756582049.html
First off, I was wondering if 100cc is powerful for a dirt bike. We are planning on using it at our cabin in Montana. We will be taking it on back country dirt roads and up steep hills. Will this be adequate? How fast will a bike like this go? Does it suit my brothers size?

i'd highly suggest NOT getting that bike…. wait around for something bigger within your price range if you have to… you will NOT be happy with that bike for long…. a few days at most…
and depending on the steepness and height of these hills, he may not even make it half way up the first one… couldn't really lean over the handlebars because then the tire wouldn't dig enough becuase of the size of the bike… to compensate he'd have to center most of his weight over the rear tire and that's a disaster waiting to happen.

You are wise to steer away from the chinese bikes as they are really only for riding once then they fall apart and you need to replace them. It works out a bit expensive that way.

secondly, gpx250r's are road bikes, and would be perfect for you. I am 6'4" and 130kg and it even handles me (but it looks like cruelty to small motorbikes)
I'd like to get some feedback on this bike, has anyone bought it and liked it or hated it? Are the no brand dirt bikes good bikes.

Parts are completely unavailable. As in they don't even make any spare parts.
The 200cc bikes don't even have the power of a Honda XR100 that is half the size.
Just need to know and the cost to run it thanks!
Example if I was riding 4 miles a day how much motorcycle oil (10w-40) would I be using? and the price if you know please!

waste your money on that thing. save up
and buy a honda.

most all chinese bikes (which i'm betting this is) are the same…. the real problems are finding parts for when it does break (even mclaren f1's will brake after so long…. machines brake, that's part of what machinery really is, replaceable parts)…. and don't expect any site you buy it from to carry parts for it, you have to go to other sites for the parts…
roketa is the easiest ot get parts for… but their apparent quality seems to be shotty at best…. you kinda have to weigh one for the other (durabilty vs. ease of getting parts) to find a good one…
if none of yal really know that much about dirt bikes and the parts involved, get roketa… so when it does need parts replaced, they will be extremely easy to find….



Tomcotexas



