I went down 50mm on my XTR...
was great....
BUT....
I dented the MM pipe with the brake caliper & smashed the
inner guard under full suspention compression..
I now have it set at 30mm lower..
I made my own links..
every 10mm longer drops the rear 25mm..

I think the XTZ is diffrent....

__________________
Harley Davidson..
The easyest way to turn gasoline into noise with out the side efect of horse power...