What Our Gearhead(R) Experts Are Saying:"The Ultegra Di2 shifts from the bar-end satellites without any perceptible lag, and the 52/36 chainring setup gives me a front shift option on courses where the 1x builds would run out of range. The dual-sided 4iiii is already on the crank, so left and right power data is there from the first ride."Why We Like ItThe P-Series brings internal frame storage to the Cervelo tri lineup for the first time, and the Ultegra Di2 build ships with in-frame rolls, a Smartpak top tube bag, and a rear hydration mount already in place. The D-shaped steerer and round stem interface keep fit adjustments straightforward when position changes between events or seasons without requiring a new fork. Heads up! We do our best to keep bike specs and images current, but occasional component changes can happen without warning, and sometimes the photos might not show the exact build you'll receive. If you want to double-check the details, our Gearhead(R) Experts are always here to help.