Thanks for all of the comments
I am keen to keep the wheels on, they are extremely good and I paid nowhere near the rrp.
I have done a bit of searching and the other bits appear to be:
Saddle: 185g (assuming it’s this one - http://www.wiggle.co.uk/fizik-arione-r3 ... ions-2013/
Cantis – 297g for the pair
Cassette - 215g
Chain - 253g
The cantis are really good so I would be slightly hesitant to replace those but everything else is up for grabs.
None of it seems particularly heavy to me (although the chain seems like a lump) but are there particular bits that people can recommend from real world riding that would help me shed some weight?
I am really interested to know how much people think I would lose by replacing the cables and I would be keen to swap the bars out for some aero ones…
Finally, I would like to replace the outer chainring because it's actually a SRAM 10 speed. Can anyone recommend a nice light 53 tooth 11 speed outer ring for me please?