A bike so fast it'll make your eyes water sounds like an impossible dream, but that's what we set out to build with the brand-new Litening C:68X SL. You've probably already spotted the Shimano DuraAce Di2 disc groupset and the DT Swiss ARC 1400 DICUT 62 carbon wheelset. They're specially chosen to help you achieve new personal bests, give the competition a hard time and generally raise your game a notch or two. But the secret to the Litening C:68X SL's success is its brand-new æro frame. A full 30% more ærodynamically efficient than before, it makes full use of the all the experience we gained building our record-breaking Aerium bikes. Read more... Beginning with a blank sheet of paper and a lot of computer time booked in, the CUBE engineering team set about examining every single part of the frame - individually and collectively - to minimise wind resistance. Computer Fluid Dynamics, backed up by extensive wind tunnel testing, allowed them to refine each iteration until they were happy that they'd created a fully UCI-compliant, ultra-slippery race frame. Details like the disc-specific design and full integration of the frame, fork, stem, handlebar and seat post combine with our next generation C:68X carbon technology to create a new generation of peloton-leading bikes. It's power meter-ready, accepts tyres up to 28mm and offers multiple bottle positions. It is, in short, designed to get out of your way and let you ride. Really, really fast.