The P-Series is a complete update to the famous Cervelo P-bike lineup, taking nods from the top-level P5 Disc. The P-Series Disc 105 is a highly adjustable and practical carbon fiber triathlon bike ideal for short to long course racing, and is a perfect platform for the aspiring triathlete who may want to dip their toes in the sport today, but likely upgrade their components in the future.
The Frameset: The P-Series frame takes design cues from the P5 Disc and S5 Disc. Most noticeable from the prior generation P2 or P3 is the slightly sloping top tube- a design element that allows more riders (with short inseams) to fit the bike. The frame is now designed wholly around disc brakes, using streamlined 12mm bolt-on thru axles.
The full carbon and proprietary Cervelo seat post mounts to the frame with a single seat post wedge. Use carbon paste and torque to about 8nm and you'll experience no seatpost slippage. The saddle mount is infinitely adjustable in tilt, providing significant fore-aft adjustability. An optional seatpost bottle mount is tilt and setback adjustable.
Cables are managed by a simple opening behind the stem, and derailleur cables run full length housing to a cable stop built into a BB cover. This is a similar, tried and trued system Cervelo has used on prior generations of P-bikes.
Cervelo has stated in the past that a manufacturer's low hanging fruit to improving bicycle aerodynamics is to control the 'add-on' features that most triathletes require: that being bento boxes, water bottles, and rear hydration/storage systems. With that said, Cervelo is now including a proprietary bento box that seamlessly integrates behind the stem, an aerodynamic downtube water bottle, and a rear hydration bracket to mount a single water bottle cage.