I hope not but judging by the trellis effect they have made its quite a lot of metal cut away i am leaning towards it being true
It has unthreaded points that were for rear pegs. These could be drilled out for more weight saving ;-)
What's with this weight saving thing? If you are the size of Dani Pedrossa I get it but most of us could shed a stone or so. It's a cheaper option than a light weight subrame and you will feel better for it.
There must be a point of diminishing returns with this weight saving that is cost V weight saving. I think we all need to be honest and admit there is more than enough power in a stock weight Fireblade. What it really is an excuse to spend vast amounts of money on shinny bits and pieces. I already only weigh the same as Dani P so I think I am allowed to buy lightweight parts but I've seen a few pie eaters on sportsbikes where you would need some serious lightweight parts to offset the pies. What we need the Honda Fireblade Carlsberg Edition - with everything you could ever want fitted as standard.
TBH not a great deal unless you are looking to reduce weight on the whole of the bike. They do look awesome and thats another selling point. They are around £400 from dealers.