Sorry Rob, i truly cannot afford two 2 litre bottles full of cocaine ;-)if we compare the SL S-Works and full fat S-Works there’s almost 4KG difference.
To replicate this weight difference and see how it feels, go get 2 x 2 litre bottles of coke and strap it onto your frame ?
In all seriousness that 4KG weight difference is pretty significant in the way the bike handles ?