As I troll through http://www.suzukicycles.org/GSX-R-series/GSX-R400.shtml yet again I notice something that I haven't before. It tells me that from '91 a steering damper is part of the package. I quote:

1991 Suzuki year code: M, GSX-R400RM, GSX400RFM, GSX400RFNM
Redesigned brake discs and new painting, otherwise pretty much the same design as in 1990. The rear shocks with gas reservoir that were mounted in the '90 year's SP (Sports Production) were now fitted even in the standard model (visible above the rear axle). Adjustable brake lever and a steering damper included.

I have a "GSX-R 400 SP 1992" and it then tells me:

1992 Suzuki year code: N, GSX-R400RN, GSX400RFN
Cosmetic changes only. 1992 was the last year for the SP-II model to be prepared. It was also the last year with the stronger 59 horsepower engine.

So it should still have a steering damper. Where is it, do you have it? Do you? Are you sure it isn't mine?
Does anyboddy have this "factory" part. I had a 600 K4 that had one, wasn't all that but better than no damper.

never a damper fitted as standard. It was a race kit part

I only realised the other day that my gk76a has a mount for a steering dampner.

I have been looking for one for ages, years in fact, cos i have the 1991 SP2. I have managed to find fitting brackets but no original damper, prob striped off for resale or mayb cos no longer worked ?? But i can supply pics to anyone wishing to copy??

The brackets are the same as the 750 and 1100 from the same frame shape. Just need to elongate one of the holes. I will find the rest of the details for the damper length at some point for those who want to know. Also any fork clamp for the correct size forks will do. Will find the size later on when i go into my garage next