Cervelo P-Series Gen 2 Ultegra Di2 (2026)DESCENDED FROM GREATNESS Take one look at the all new P Series, and youll notice a striking resemblance to our flagship TT bike, the P5. P Series benefits from all the racing, wind tunnel time, and testing required to make the P5 the fastest TT bike in the World Tour, but adds a couple features that make it a perfect companion for a triathlon of any distance. P Series uses a fork with a D shaped steerer tube and round stem interface. This means you