Shimano Dura Ace Di2

The snappily titled Cube Litening Super HPC Di2 – we’ll just call in the Cube, if that’s alright with you – is one of those bikes that’ll have even non-biking mates whistling through their teeth and asking how much it weighs, how much it costs, and whether they can have a go. The answers are 15.2lb (6.92kg), £5900, and no. It’s a full carbon race bike that comes fitted with top of the range everything, including Shimano’s Di2 electronic shifting, and it goes like stink.

Wilier Cento 1 Di2

Di2 is Shimano's new, flagship groupset. Combining Dura Ace 7900 ergonomics with the performance of an electronic shifting mechanism sets this apart. Di2 is the best groupset that I have ever ridden, but then for this money so it should be.