Cervelo P Ultegra Di2 Bike
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Cervelo P Ultegra Di2 Bike
Cervelo P Ultegra Di2 Bike Info
The Cervelo P Ultegra Di2 Bike descends directly from the P5 — Cervelo's flagship time trial machine and one of the fastest UCI-legal bikes ever developed for WorldTour racing. Where the P5 is built for pure time trial performance, the P-Series takes that same wind tunnel development, carbon engineering, and aerodynamic architecture and translates it into a triathlon platform with the storage, hydration integration, and fit flexibility that long-course racing demands. This is what it looks like when a dedicated triathlon bike inherits genuine TT racing DNA.
The frame is aerodynamically refined over the previous generation — 5.9 grams faster at race speed on its own — but the real story is what that refinement enables. Cervelo used the updated clearances to spec the Reserve 57|64TA wheel combination and 29mm Vittoria Corsa N.EXT tires, a combination that delivers 3.5 watts of savings versus the prior Reserve 50/28mm setup. A bike that's simultaneously more aerodynamic and able to run a faster, more compliant tire isn't a compromise — it's the point. The fork uses a D-shaped steerer tube with a round stem interface, which means you're not locked into any specific basebar or extensions. If your fit evolves or you want to experiment with position, you can change components without replacing the entire cockpit.
The seat tube angle is adjustable between 75 and 79 degrees across all six frame sizes, covering a wider range of triathlon fits than almost any other bike in the category. Cervelo offers the bike in six sizes — 48 through 61cm — which matches or exceeds the sizing range of every major triathlon brand. Getting the tri position right is non-negotiable for both performance and injury prevention, and the combination of adjustable seat angle, six sizes, and the Profile Design SuperSonic cockpit assembly gives a fitter more room to work with than most platforms allow.
Despite the "Ultegra Di2" designation, several key components are spec'd above that level. The brake calipers and hydraulic levers are Shimano Dura-Ace R9180 — Shimano's top-tier disc brake hardware — and the bar end shifters are Shimano Dura-Ace Di2 R9160. These aren't minor details: Dura-Ace hydraulic braking is perceptibly better than Ultegra in feel and modulation, and you'd typically only find it on significantly more expensive builds. The drivetrain itself is Shimano Ultegra Di2: R8150 front and rear derailleurs, R8100 crankset with 52/36 chainrings, and a 12-speed 11-30 cassette — reliable, fast-shifting, and fully electronic throughout.
The 4iiii Precision Pro GEN3+ Dual Sided Power Meter is built into the crankset as a stock specification. Dual-sided power measurement captures independent left and right leg data, giving a complete picture of output and balance for training and racing. At this price point, including a dual-sided power meter in the base spec rather than treating it as an add-on is a meaningful decision — it's the tool serious triathletes use to pace long-course efforts, and it's here on day one.
Reserve 57|64TA carbon wheels front and rear, built on DT Swiss 350 hubs, are tubeless compatible and designed specifically around the P-Series' aero optimization. Fifty-seven millimeters up front and sixty-four in the rear is a depth pairing chosen to minimize drag while maintaining crosswind stability in real race conditions. Vittoria Corsa N.EXT TLR G2.0 tires in 700x29 complete the rolling package — a premium tubeless-ready race tire that prioritizes low rolling resistance and puncture protection for long-course racing.
The P-Series marks Cervelo's first internal frame storage integration on a triathlon bike. The Smartpak Top Tube Storage Bag 400 and in-frame storage rolls for inner tube and flat kit are included and integrated into the frame design rather than bolted on as afterthoughts. A rear hydration mount and front computer/accessory mount 810 round out the race-day setup. One Profile Design Axis Ultimate Carbon bottle cage is included. This bike arrives ready for the course.
Specs at a Glance
- Frame: Cervelo P-Series carbon, UCI-legal, disc-only
- Fork: Cervelo All-Carbon Tapered P Fork, D-shaped steerer
- Front Derailleur: Shimano Ultegra Di2 R8150
- Rear Derailleur: Shimano Ultegra Di2 R8150
- Crankset: Shimano Ultegra R8100 with 4iiii Precision Pro GEN3+ Dual Sided Power Meter, 52/36
- Cassette: Shimano Ultegra R8100 12-speed, 11-30
- Brake Calipers: Shimano Dura-Ace R9180 Hydraulic Disc
- Bar End Shifters: Shimano Dura-Ace Di2 R9160
- Brake/Shift Levers: Shimano Dura-Ace Di2 R9180
- Rotors: Shimano CL800 Centerlock
- Wheels: Reserve 57TA (front) / 64TA (rear), DT Swiss 350 hubs, tubeless compatible
- Tires: Vittoria Corsa N.EXT TLR G2.0, 700x29
- Aerobars: Profile Design Wing 20C+ Evo, 52 ASA, SuperSonic cockpit
- Stem: Cervelo ST36 Alloy
- Seatpost: Cervelo SP23 Carbon
- Saddle: Selle Italia WATT Superflow Manganese
- Bottom Bracket: FSA/BBright Thread Together
- Seat Tube Angle: Adjustable 75°–79°
- Accessories: Rear hydration mount, front computer mount, Smartpak top tube bag, in-frame storage rolls
- Sizes: 48, 51, 54, 56, 58, 61cm
- Colors: Basalt, Extraspectral Mauve
Design Benefits
- P5 WorldTour TT DNA — frame design, wind tunnel development, and aero architecture inherited directly from Cervelo's flagship time trial machine
- 3.5 watts faster wheel/tire combo — Reserve 57|64 + 29mm Vittoria saves 3.5W vs the previous Reserve 50/28mm setup, while the updated frame is 5.9 grams faster
- Dura-Ace hydraulic disc brakes included — R9180 calipers and levers; an upgrade above the Ultegra level typically found at this price
- 4iiii Precision Pro GEN3+ Dual Sided Power Meter — left/right independent power data included in the base spec, not an add-on
- Adjustable 75°–79° seat tube angle — wide tri-fit range across all six sizes; D-shaped steerer allows any basebar/extension combination
- First internal Cervelo tri storage — Smartpak bag, in-frame storage rolls, rear hydration mount, and computer mount all included
- Six frame sizes — 48 through 61cm, matching the broadest sizing range available in the category
Final Take
The Cervelo P Ultegra Di2 is one of the most complete triathlon bikes available at this price. It arrives with a dual-sided power meter, Reserve carbon wheels, Dura-Ace hydraulic braking, internal storage, and a race-ready hydration setup — components and features that riders of other brands often spend months and thousands of dollars assembling after purchase. Backed by P5 aero development and Cervelo's depth of fit expertise, it's the choice for triathletes who want a properly equipped, fast bike they can race the day it arrives.
Cervelo P Ultegra Di2 Bike - Specifications
*Specifications are subject to change.
Cervelo P Ultegra Di2 Bike Geometry
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