So in reading this thread:
I decided to take on the fork conversion. Turns out -W- was thinking the same thing I was a while back except I had planned to use some KYB forks off a YZ250F. After the debacle of going to Aftershocks at TriValley Moto only to find out Phil and TriValley split ways the night before I showed up with my forks in hand, ugh.... I decided to go this route.
I am starting this thread because a few of us have been asking questions of -W- and this will give us our own thread to communicate in. I'm going to quote the important posts from the above thread here so we'll have the info in one easy to reference place.
The short version is this: You can easily convert the front forks on the BMW F800GS. I used a set of Marzocchi forks from an Aprilia RXV450.
Here is the order of things:
Find used forks with simialr diamater (marzocchi Shiver45 forks are the same as ours but a much upgraded version of their fork)
Take them apart
Take the bottom foot adjuster from the donor forks
Take it to a local machine shop along with the bottom part of each F800GS fork
The machine shop can machine the bottom of the stock forks to fit the donor bottom (compression) adjuster
Take the internals from the donor forks + the fork tubes from your stock forks + fork caps from the donor forks
Bring it to a local and good dirt bike or dualsport suspension shop (I used McCoy's Offroad in Carson City, NV)
They will put it together for you
Be sure the add a spacer to reduce the travel on the donor forks (info is below in this thread)
Put it back to gether
Put forks back on
Ride and smile a LOT!