FMF Q4 slipon for the 05-08 crf450r also fits the 05 crf450x.
only real marks on it are the decals peeling from heat,it was used 4 times and tested 92 Db with the P/N sound tester(this thing is deadly quiet).part number 41255 175.00
Kouba lowering link for Rmz250/rmz 450
lowers rear .75" on the 05 RMZ450 & 1.00" on the 06-09 RMZ450 & 07-08 RMZ250)
rekluse dual brake setup-
if you have just the bar rear brake then this will allow you to mount the rear footbrake back on and have both,you do not get the master cylinder just everything thats needed to adapt from it.the adapter fits the crf 450r/x rear master,may fit others but thats up to u to find out.(the pic with the master cylinder in which it works with,not included)
any questions shoot me a pm.