Adding a Givi topcase to the R1100RS

This page shows how to add a Givi case to the BMW R1100RS motorcycle. Early models do not come with a luggage rack. Starting with the 1996 model year, the rack is standard. A Givi rack and case can be added to either model, but if you don't have the factory rack, it will require either cutting slots in the plastic tailpiece, or buying a new tailpiece that already has the slots. Here's what the finished project looks like.

Parts list

Prices shown are US retail, circa 1999.

 

BMW Retrofit Kit for the Top Case R 1100 RS	71 60 2 317 609	USD 94
Givi R11RT rack	E183	USD 61
Givi case, black	E360N	USD 168
Givi backrest, black (optional)	E83	USD 40
BMW tailpiece, with slots (optional)	???	USD ???

 

The BMW rack kit consists of a bracket for the BMW top case, which will not be needed, a sub-frame, two rubber grommets for the tailpiece, a bunch of nuts and bolts, and two sets of instructions, one for bikes without the luggage rack, and one for bikes with the rack. The instructions are summarized here so that you have an idea what to expect.

 

Bikes without luggage rack Remove the saddlebag mounts / grab rails. I skipped step 3, "Reworking the saddlebag mounts" because I will not be using the BMW top case. Remove the tailpiece. If you are going to cut slots, see below.

Bikes with luggage rack Remove the subframe. This is the support for the luggage rack. It has shorter rails than the subframe that comes with the kit. Remove the tailpiece.

Install new subframe Install the new subframe using the hardware that comes with the kit.

Install new/modified tailpiece Put the rubber grommets on to the subframe rails. Slide the tailpiece on to the grommets. Do not install the bracket for BMW's top case.

Add Givi rack Bolt the rear supports (3) on to the BMW subframe, using spacers (11). Bolt the front support (2) on to the BMW saddlebag mount / grab rail. Bolt on Givi platform.

Cutting slots in the tailpiece I used a Dremel tool with a grinding bit. I did not have this template so I just eyeballed it, and stopped to check often as I went. Watch the gyroscopic effect! Anything spinning 30000 rpm would have a lot of rotational inertia. If I were to do another install, the Roto Zip tool looks like something that might work well. DISCLAIMER: this is by far the trickiest bit here. If you're not ready to buy a new tailpiece in case of mistakes, go buy a new tailpiece with precut slots and put your old one on EBay!

Here are some more pictures of the finished project:

Here are pictures of the under-seat mounting points:

Here is a copy of the instruction manual for bikes without the factory luggage rack.