I'm not sure where you are getting this advertised weight of 6.2kg. I can't see Storck advertising that weight on their website or their downloadable PDF catalogue. Do you have a link to it?
I'd say your bike with ultegra and wheels over 1400g sounds about right at 7.1kg.
Sorry for my english. they did not advertise as 6.2kg. What I did was getting the weight from each components from their original manufacturer webpage.
Here is the link to Storck Fascenario Frame and Fork Weight.http://storckworld.com/road-bikes/allro ... atinum-g1/
It is written "WEIGHT: FRAME FROM 770 G, FASCENARIO.3 PLATINUM FORK FROM 330 G, FRAME SET FROM 1100 G"
Let say 10% variances in frame and fork, it will be 1210g and to add up every components: Groupset, wheelset, Handle Bar and etc... It still weight more than the publish weight.
This is weight of Storck F.3 frame in size XS - 740g, which is lower than the 770g advertised in Storck's website. Bare frame without the bolts, hangers, hidden seat clamp, cable sleeves
Fork weight: 350g (uncut) vs 330g advertised
I would say pretty accurate as advertised
Current Bikes: Storck F.3 5.5kgColnago Concept Art Deco CHDK 7/6.5kg
Collection: Team Ti Raleigh 753 Vintage Campy
Storck Organic Light 11.1kg
Ex: Storck F0.6 Di2 6kg, Storck F0.7IS Di2 4.8kg, Storck Aero2 7.04kg