Does anyone know the weight of the standard classic bonnet?

I'm looking at a carbon fibre bonnet that weighs 5.4 kg

Is this considerably lighter thatn standard?

Even if its a third of the weight, I still dont think it would necessarily justify the cost but I need a new bonnet anyway so may as well look at all the options.

Thanks
Ben

Think it's about 25kg!

how much is the alloy one?

25 kg! Is that def right?

Then 5.4 is quite a reduction

Ben