Vitus ZX1 CRI Aero Disc Ultegra Di2 £3199.99

Vitus launched the ZX1 name back in 1991, it was an organically-shaped, curvy carbon masterpiece, with claims to be the first commercially available carbon monocoque race bike. A lot has changed in the intervening years, with the XZ1 making a return for 2018 in its current form, tested here.

The full Shimano Ultegra 8070 Di2 groupset with its sharp and accurate electronic-assisted shifting is great. It’s paired with new 8070 Ultegra flat-mount brakes, which are every bit the equal of Dura-Ace. New IceTec rotors give loads of braking feel without the sonic feedback you can experience with inferior rotors.

While overall power delivery is solid, the steering is light and you can induce a little flex. Climbing is a joy, the relatively low overall weight, sharp gears and light wheels meant we found ourselves getting out of the saddle and dancing on the pedals whenever the opportunity arose. We did find that because the aero-shaped seatpost is glossy, with small textured strips front and rear, it requires plenty of carbon prep to stop the post sliding down.

The ZX1 is on the cusp of being the bargain of the year; it’s loaded with excellent kit and the ride is a beautiful balance between sharpness, speed and comfort that dazzles over poor surfaces.

While overall power delivery is solid, the steering is light and you can induce a little flex