I have a Givi topbox on my bike and I believe Bert has one on his K75. The previous owner had the box come off on a rough section of road which ended up damaging the lower rear seat cowl.

I was not happy with the standard mounting as it just screws (with rubber mounts) to the top part of the seat cowl the same as the standard rack. It is rated at 5kg's which for a 45 litre box is not too flash. I found a couple of pictures of other K bikes which illustrate the original mounting and a far more substantial one made by Reynolds who unfortunately are no longer in business as far as I am aware.



This is the standard mount.



This is the same top box as mine but on a far more substantial mount. I created a combination of the two which essentially reinforces the original but is nowhere near as attractive as the Reynolds rack. Function over form etc. The ideal solution might be to strengthen the standard mounting but from inside the seat cowl and to the nice strong sub-frame. A bit beyond my meagre talents I am afraid but perhaps an interesting challenge for those of you whose bikes are laid up for the winter

Regards,

Phil

G'day Phil I have a Givi top box as well and have
used a length of 50mm x 5mm flat aluminum to suport the
base plate.It is mounted to the rear bolt holes of the pannier
rack on both sides of the bike and then bolted to the base
of the top box mountmounting plate in 3 places. I did a trip
up the Birdsville track and various dirt roads to the Off Center
Rally in 2008 (on my k100 rs out fit )and it was as solid as a rock.
hope this helps.

snayle

Hi Phil,
The mounting was OK for the standard top box which was only 23 litres from memory hence the low weight rating :-(
Regards,
K-BIKE