It matters which way it is up because of the unspring weight.
wikipedia refering to bike forks :
"Upside-down" (USD) forks are installed inverted compared to typical forks, with the tubes at the bottom and the bodies at the top. This decreases the
unsprung weight of the motorcycle and improves its handling. USD forks are usually found on
sportbikes, though
Honda's large power-cruiser, the
Valkyrie, sported USD forks.
like I said tho, any shocks mounted the other way seems to be because of access, design or other matters, airflow, but not all out shock absorbing performance... Should I put the oven on?
