My bike model is a Baja X250. It was manufactured by Xmotos.
The first thing to go wrong with this bike was a flat. A flat doesn't sound like a big deal to some people, but it is to me. The stem valve snapped off so it wouldn't hold air. It is not my fault because they shouldn't just come out like that; it is a design flaw.
The second thing that went wrong was the crankcase hose busted, but it was easy to cut and replace.
The third thing that went wrong was the clutch cable broke. It broke when I was just going for a quick ride around the house, then when I got back to the shop I realized the cable had snapped. I had one ordered at Portland motorcycles, and they ordered it from Baja Motorsports and after a week they called and said they couldn't get a hold of them, so I ordered another one, then it didn't come, so I got a bike cable and tied it around the clutch and it works great.
The forth thing that went wrong was the throttle cable snapped 3 days after I fixed the clutch cable. If I had been on a trail somewhere, I would have been stranded.
This bike is a piece of junk, eventually I will spend more in parts than I did for the bike.
One good thing about this bike is it was retailed at $1800 and got it for $1300.
The seat is very uncomfortable.
The gas tank it too small, only goes 33 miles per tank.
It has good tread.
It only goes 27 in 4th gear.
It has a low rpm.
It's kick starter is nearly impossible to use.
It's hard to start for the first time, because you have to hold the brakes down to use the electric starter.
I am the person who posted this review, and I would like to say some more things about this bike since I have ridden it for 29 hours and taken it a couple of places.
One positive thing is that it can get up hills pretty good.
One negative thing is the web site says that it can go 59mph and the manual says it can go 56mph, but the fastest I could get it to go was 34 at 7,000 rpm and it makes its max hp (15.4 - 15.2) at 6,500rpm so I doubt it can go much faster, especially since it wouldn't go any faster (flat ground).
One tip I have is check tier pressure all the time and tighten the nuts (not so tight that you tear the stem valve) so the inter tube does not slip.
Tip #2 make sure when starting with electric starter, hold the brake down or it won't start.
Tip #3 get a tachometer, they are a fun and easy way to help you tell when to shift, makes it easier to break-in, and prevent you from blowing the engine and walking back. (I recommend trail tech because they work easy and they do a lot more)
I have a 2007 Baja X250 motorcycle and absolutely love it. All I have done to it is general maintenance and have never had a problem with it, and no I'm not a dealer, just an average Joe that likes riding enduro dirt bikes, not full race bikes.
I doubt you could do a real jump with this bike.
This is the most poorly made bike. When I was doing a chain adjustment, both the nuts got stripped.
On the way home, my kick stand broke, causing the bike to fall (on a trailer) on a main road.
This bike is very cheap. When riding, the throttle cable snapped (I was going half throttle). I had to walk the over 200 pound bike over hills for about 1 mile. Try your best not to get this bike, but if you do, carry an extra throttle cable and clutch cable.
I paid $1200 for my X-250, and for the money it's a good bike.
The clutch and throttle cable have both broken.
The kickstand plate could be stronger.
Finally, some bolts have come out (front brake caliper).
For me, it is better to save $4,000 to $5,000 and make these relatively inexpensive fixes. However, I do have a local mechanic repair the cables instead of ordering - apparently many others are having a similar problem, and maybe there aren't enough cables to go around.
If you got a used name brand, it would cost less to buy, have more power, and not much would go wrong with it, plus parts are easier to find.