Pete, the hard part that I have is for attaching to the front suspension on the Telever. It's main purpose in life is to stop the forks from swinging violently when you step off and breaking the small alloy spigot that is part of the top triple clamp.
When you fall off, either the front wheel will grab the dirt and swing the forks around or the handlebars will do the same thing.
I only 2 weeks ago, was showing another 1100 owner why his forks were now using the tank as a stop on one side as the alloy spigot/lug was missing. He bought the bike secondhand and didn't know.
If you have a pre September 96 model then the hard part for the gearbox could be utilised by yourself to re-inforce the swing arm mounts that are part and parcel of the gearbox housing. My 1100 which is 98, has the same metal strengtheners as the touratech hard part as standard, except they are painted black instead of yellow. There was never a re-call they just included it in the next model of bike.
A friend who did 195,000 Klm's on his 94/5 1100 had the gearbox bearings die, upon pulldown it was realised that the gearbox housing had cracked where it held the swinging arm. BMW Australia provided a new housing and new bearings and he paid for the labour only. Considering that his bike had really had a hard life with bulk sand, corrugations and just plain terrible roads and tracks, this was an interesting scenario to ponder.
Mick.