My Trek has an 80mm fork on it. I will be getting a new fork soon but I"m not sure on what the size limit is on a new fork that I buy??? All I do XC ride no dirt jumping, freeriding,etc, etc. I"m thinking the frame was built to not go over 120mm, or it would look funny with the front end way up in the air?? but I really have no idea. Please explain to me what size I should get and why??? thanks for the info.