i want to get a 03 04 z400 and i want to know if the frame problum is normal or is it just the racers that have the problum

 

you have to be really hard on them to break them. large jumps etc. you can gusset it and not have any problems and its simple to do. if its an 03 you should already be able to see the stress cracks in the paint above the shock towers thats the main place to gussett