need help choosing a new bike

[amanda$236$]

i am 14 year old girl and am 5ft tall and weigh around 117 pounds, i am pretty strong/athletic. I want to start racing mx and plan on getting a yz125 or yz250f and sag the seat for my height, ive been riding a klx110 for 2 years on trails and i am sick of that small/slow bike. i was wondering if u thought that would be a good idea to get a yz125 or yz250f or should i stick with an yz85? :ride:

 

[TimberPig]

Either of those bikes is going to be very tall for you. You will not be able to lower it enough to comfortably touch without leaning it over significantly, even with lowering links and chopped seat foam, and the forks shortened. An 80/85 or a KX 100 would be much better choices, and will likely surprise with their power. 25 horsepower in a 150 lb bike makes them pretty snappy. Your KLX would be lucky to have half as much power and weigh the same.

 

[06yz]

You should probably get the yz85. This will give you a lot of power and speed, you will not be dissapointed. The yz125 is a very big bike for your height.