Hello all, My son races Harescrambles and i got him a 91 250x that im completely rebuilding. I am wanting to put a better shock on the back that has longer travel and better adjustment, most of the time i cant use other shocks cause of the swing arm. so my first question is, is their another swing arm out thier that i can take off another bike and put on to the 250x? Also is thier any other a arms and shock that i can use other than the 400ex front end ty for your help.