- From
- €7,999$8,000€7,999
- Lightest
- —
- Builds/sizes
- 4/4
Storage
Cervélo · model family
Cervélo P5X / P3X / PX-Series
Cervélo's triathlon-only beam-frame bikes, built without UCI constraints, sold from 2016 until the 2020s.
- From
- $11,000$11,000$11,000
- Lightest
- —
- Builds/sizes
- 2/4
Storage
Generations
What changed from one generation to the next. Useful when you're weighing a used bike against a new one.
2019-09
PX-Series
- P3X frame with the P5X's collapsible basebar
- Dura-Ace Di2 and SRAM AXS builds; the P5X name is dropped
2019-03
P3X
- Frame 16% lighter than the P5X, 8% stiffer at the head tube and 15% at the bottom bracket
- 3 mm more tyre clearance, for 28 mm tyres
- Fixed basebar and Speed Riser, 13% and 8% lighter
- StealthBox 300 down-tube and SmartPak 600 top-tube storage
- Lower prices: Ultegra Di2 builds from $8,000
2016-10
P5X
- Triathlon-only beam frame with no seat tube or seatstays
- Disc brakes (TRP HY/RD) and thru-axles
- Two-piece foldable cockpit with 112 mm of stack and 91 mm of reach adjustment and a 74-81° seat angle range
- Integrated storage for nutrition, tools and up to three bottles
- Composites made with HED and ENVE
Variants side by side
Each variant is shown with its first complete build. Pick other builds on the compare page.
| P3X / PX | P5X | |
|---|---|---|
| Overview | ||
| Brand | Cervélo | Cervélo |
| Build | P3X Disc Ultegra Di2 | P5X SRAM Red eTap |
| Build notes | Launch price; GBP was to be confirmed. | Launch build and price as reported by AeroGeeks; BikeRadar gives $15,000 for the top build. Other markets were not priced at launch. |
| Price (MSRP) | €9,999$10,000€9,999 | $15,000$15,000$15,000 |
| Model year | 2020 | 2019 |
| Generation | P3X / PX-Series (2019) | P5X (2017-2019) |
| Launched | 2019-03 | 2016-10 |
| Newer generation | PX-Series (2019) | P3X (2019) |
| Discipline | Triathlon | Triathlon |
| UCI legal | No | No |
| Verdict (out of 100) | ||
| Overall score | 72 | 70 |
| Aero | 78 | 78 |
| Frame | 70 | 66 |
| Components | 74 | 74 |
| Hydration & storage | 82 | 84 |
| Fit | 80 | 86 |
| Practicality | 54 | 48 |
| Price | 67 | 54 |
| Frame & fork | ||
| Frame material | Carbon | Carbon |
| Frame sizes | S, M, L, XL | S, M, L, XL |
| Also available as | P-Series and P5 (UCI-legal Cervélo tri/TT bikes) | P5 (UCI-legal TT and triathlon bike) |
| Compatibility & standards | ||
| Brake type | Flat-mount disc (140 mm mounts) | Flat-mount disc (140 mm mounts) |
| Wheel size | 700c | 700c |
| Max tire width | 28 mm | 25 mm |
| Bottom bracket standard | BBright | BBright |
| Front axle | 12x100 thru-axle | 12x100 thru-axle |
| Rear axle | 12x142 thru-axle | 12x142 thru-axle |
| Max chainring | 57T | — |
| Front derailleur mount | Removable front derailleur hanger (Cervélo FDM-151) | Removable front derailleur hanger (Cervélo FDM-P5X) |
| Hydration & storage | ||
| Integrated hydration | No | No |
| Hydration details | Removable bottle mounts on the Speed Riser and built into the seatpost; no internal reservoir. | Carries up to three bottles (AeroGeeks lists three 25 oz bottles); no internal reservoir. |
| Integrated storage | Yes | Yes |
| Storage details | StealthBox 300 on the down tube for a repair kit and SmartPak 600 on the top tube for food (BikeRadar). | Smartpak top-tube bag and Stealthbox storage; AeroGeeks lists room for a full Ironman's nutrition, two tubes, CO2, tools and weather gear. |
| Top tube bento box | Yes | Yes |
| Fit & adjustability | ||
| Aerobar system | P3X: fixed basebar with Speed Riser aerobars (tilt, height, width and reach adjustable with one tool). PX-Series: the P5X's collapsible basebar with tilting aerobars. | Two-piece foldable integrated basebar and aerobars |
| Pad stack adjustment range | — | 112 mm of sliding stack adjustment; flipping the basebar changes its height by 80 mm |
| Pad reach adjustment range | — | 91 mm of reach adjustment |
| Extension options | — | 0-12° extension tilt |
| Effective seat angle range | 78.5° listed by Cervélo (top tube given at two values per size) | 74-81° |
| Aerodynamics | ||
| Manufacturer aero claims | No new drag figures were reported; BikeRadar says the frame is 8% stiffer at the head tube, 15% stiffer at the bottom bracket and 16% lighter than the P5X frame. | AeroGeeks reported Cervélo's claim of 30 g less drag than the P5 averaged from -15 to +15 degrees yaw and up to 90 g at 0 degrees, after 180 hours of wind-tunnel testing and CFD on more than 150 iterations. |
| Travel, maintenance & warranty | ||
| Travel & packing | — | The cockpit folds and a dedicated Cervélo travel case was offered ($849). |
| Headset bearings | 1-1/8 in upper (30.2x41x6.5, 36°x45°) and 1-1/2 in lower (40x51.8x7.5, 36°x45°) | 1-1/8 in upper (30.2x41x6.5, 36°x45°) and 1-1/2 in lower (40x51.8x7.5, 36°x45°) |
| Derailleur hanger | DRH-WMN112 (replaceable) | Integrated rear derailleur hanger |
| Proprietary parts | Integrated basebar and Speed Riser, frame-specific StealthBox and seatpost | Integrated two-piece cockpit, frame-specific storage |
| Sold via | Through Cervélo retailers | Through about 80 selected Cervélo retailers at launch |
| Drivetrain | ||
| Groupset | Shimano Ultegra Di2 R8050 | SRAM Red eTap |
| Launched | 2017 · replaced by Shimano Ultegra Di2 R8100 (2021) | — |
| Speeds | 11-speed | 11-speed |
| Electronic | Yes | Yes |
| Wireless | — | Yes |
| Drivetrain | 2x | 2x |
| Brakes | ||
| Brake calipers | — | TRP HY/RD |
| Type | — | Cable-actuated hydraulic disc, flat mount |
| Rotors | — | TRP TR160-25 |
| Front rotor | — | 160 mm |
| Rear rotor | — | 160 mm |
| Mount | — | Center Lock |
| Notes | — | Listed by AeroGeeks as TRP-25 Centerlock 2-piece 160 mm |
| Wheels & tires | ||
| Wheelset | — | ENVE 7.8 |
| Included extras | ||
| Storage / bento | Cervélo StealthBox 300 and SmartPak 600 | Cervélo Smartpak top-tube bag and Stealthbox |
| Geometry (smallest – largest size) | ||
| Sizes | S, M, L, XL | S, M, L, XL |
| Stack | 468–524 mm18.4–20.6″ | 468–552 mm18.4–21.7″ |
| Reach | 386–442 mm15.2–17.4″ | 386–442 mm15.2–17.4″ |
| Seat angle min | 78.5° | 74° |
| Seat angle max | 78.5° | 81° |
| Head tube angle | 71–72.5° | — |
| Head tube length | 76–156 mm3–6.1″ | 76–156 mm3–6.1″ |
| Chainstay | 405 mm15.9″ | 405 mm15.9″ |
| Wheelbase | 975–1,035 mm38.4–40.7″ | — |
| BB drop | 75 mm3″ | 75 mm3″ |
| Fork offset | 43–53 mm1.7–2.1″ | 43–53 mm1.7–2.1″ |
| Trail | 61.4–62.4 mm2.4–2.5″ | — |
| Front centre | 582–642 mm22.9–25.3″ | 582–642 mm22.9–25.3″ |
| Standover | 691–783 mm27.2–30.8″ | 689–775 mm27.1–30.5″ |
| Wheel size | 700c | 700c |
Geometry overlay
Drawn to scale (how to read it).