I have 2006 CRF450X...it came to me used with SD Suspension and it had been dialed in for a 250# rider who did enduros and HS. I have adjusted out the clickers to try softening it but it still hits stiff as a brick for me so it is not very comfortable in tight woods. I ride only on HS trails and no track whatsoever, so I do a lot more sitting in the tight woods than I would otherwise and really would like the comfort factor to be upped. The P/O also tossed in his stock springs for front and rear. I have not put these stockers back in as I wanted to sound it out on this forum first to see if I am better off with leaving the stiffer susp or am I better off going with stock where it might end up being way too soft/bottoming out.