Cannondale SystemSix - 2020, 51 cm

The 2020 Cannondale SystemSix Ultegra Di2 is a pure aerodynamic powerhouse, engineered with a single goal: to be the fastest UCI-legal road bike in the world. Designed as a complete "System" where the frame, fork, seatpost, and wheels work in perfect harmony, this size 51cm carbon rig is a masterclass in reducing drag. It features the incredibly precise Shimano Ultegra Di2 11-speed electronic drivetrain and rolls on massive, ultra-wide HollowGram 64 KNØT SL carbon wheels. Weighing 17.8 lbs and boasting an upgraded rear pulley for even smoother shifting, this bike is in great condition, professionally tuned, and 100% ready to hold high speeds with less effort.

Why We Love It

 * Faster Everywhere: Cannondale’s testing proves the SystemSix is faster than a lightweight climbing bike on any grade up to 6%, making it a dominant force on flats, descents, and most rolling hills.

 * KNØT 64 Wheelset: One of the fastest wheelsets on the market, the 64mm depth and wide internal rim profile allow 25c tires to measure wider, improving aerodynamics and comfort simultaneously.

 * Integrated Speed: The HollowGram aero cockpit and seatpost are designed specifically for this frame, hiding cables from the wind while offering more adjustability than typical one-piece designs.

 * Electronic Precision: The Ultegra Di2 groupset provides effortless, lightning-fast shifting at the touch of a button, ensuring you are always in the perfect gear during high-speed sprints or steep inclines.