well...what does it do ? it sits in place locating and holding the swinging arm, to my mind if the setting is wrong , do it up FT ( fucking tight ) and add a couple of drops of medium Loctite , that will hold it .
yes i know the book says 160 nm.
i don't have a torque wrench that goes that high.
getting mine off , some years ago involved breaker bar, heat and a fork stanchion ! it wasn't done up quite as tight , it was seated , and just breaker bar tight.
it hasn't come loose in 60k miles.
FYI , IIRC rear wheel spindle on an fzr 1000 exup, torque is 140 nm we used to do them to 120 nm , they never came loose.
manuals are a guide .
now watch someone come along and say this is a crock of shit !