I bought this guard for my 2026 Z900RS - I'd heard a few horror stories of stone damage to the rad which I wanted to avoid so went with, in my opinion, the best.
It seems well made and the fit is very good for the most part. The exception is along the bottom edge of the radiator, where it seems a bit too long and gets very close to the headers, making it difficult to clean them. That's not to say it's a bad fit, but just IMO it could follow the lines of the rad a bit better at the bottom without compromising protection.
When I received it, it was very well packaged in a sturdy bag, inside a box, and that was inside another box, so no chance of postal damage.
There were no instruction in the box and what I didn't notice immediately was the strip of 6 rubber bungs which needed to be attached to the round holes in the guard - they had dropped onto the floor when I opened the bag and I missed them to start with. I found them later and realised what they were for so reassembled everything with them in place.
So far, after 2 weeks and 500-ish miles, everything is working perfectly with no issues at all. The guard works well, doesn't block the airflow enough to make any difference and it looks neat and tidy. Overall I'd give this guard 95 out of 100. It'd be 100 if the lower edge was better designed. Very happy customer.