VentumTempus
The Tempus is Ventum's first UCI-legal time trial and triathlon bike. It drops the brand's signature frame without a down tube for a conventional double-diamond layout and has no hydration built into the frame. Ventum focused on low weight, a very wide-set fork and seat stays that steer air around the wheels and legs, and a steep 82° seat angle. It is sold direct as a frameset or in four complete builds, all with a Profile Design Wing Ultimate S cockpit.
- From
- $5,799$5,799$5,799
- Builds
- 5
- Sizes
- 4
- Frame weight
- —
Design sketch, generated from the manufacturer's photo
Our verdict
Overall
out of 100, average of 7 categories
A UCI-legal TT and tri bike for riders who want a fast, light frame built from standard parts: threaded bottom bracket, a third-party Profile Design cockpit and a UDH hanger. The price of that simplicity is no integrated hydration or storage, so long-course racers will be relying on bottle mounts and a saddle-mounted holder.
Scored Oct 2026
- + Easy to travel with and service
- + Affordable way in
- + Top-tier build kit
- − Little integrated hydration or storage
AI-drafted from the specs on this page and reviewed before publishing. Scores are relative to every bike in the catalog when they were given, so they drop as newer bikes and parts raise the bar.
- Aero
- 80/100
- Frame
- 72/100
- Components
- 82/100
- Hydration & storage
- 45/100
- Fit
- 74/100
- Practicality
- 86/100
- Price
- 85/100
Aero claims and front-end integration
Carbon grade, weight and warranty
Groupset, wheels and power meter
Hydration and storage in the frame
Sizes and adjustment range
Travel, standard parts, servicing
From the cheapest complete-bike MSRP
Bike duel
Frame & platform
Frame & fork
- Frame material
- Carbon
- Fork material
- Carbon, tapered steerer, carbon dropouts
- Frame sizes
- S, M, L, XL
- UCI frame approval
- UCI-approved as 'Tempus' (frame and fork code VENTUM-002), approved 06.09.2024, sizes XS to XL (5) (UCI list version 2026.10.02)
Compatibility & standards
- Brake type
- Disc, flat mount
- Wheel size
- 700c
- Max tire width
- 30 mm
- Bottom bracket standard
- T47 threaded
- Drivetrain compatibility
- Electronic (Shimano Di2 and SRAM AXS builds offered); UDH derailleur hanger
- Cable routing
- Internal; brake hoses run inside the frame and fork
Hydration & storage
- Integrated hydration
- No
Fit & adjustability
- Aerobar system
- Profile Design Wing Ultimate S carbon basebar, developed together with Ventum for the Tempus
- Third-party aerobars possible
- Yes
- Pad stack adjustment range
- Profile Design A3A risers with 30 mm of stack as standard; see pad stack per size
- Extension options
- Profile Design 52 ASC carbon (52 A alloy on the Rival build); ASC Pro upgrade for $600 in 325, 350 or 375 mm
- Seatpost type
- Ventum carbon post, 0° offset
- Effective seat angle range
- 82°
Aerodynamics
- Manufacturer aero claims
- Up to 15 W faster than the Ventum One Disc in certain conditions and configurations
- Testing method
- CFD and wind tunnel
- Tube profile
- Airfoil tube sections along the whole frame; very wide-set fork legs and seat stays
Travel, maintenance & warranty
- Travel & packing
- Ventum ships bikes in a ride-ready box: about 98% assembled within the continental US (fit wheels and seatpost), about 85% elsewhere (stem also to fit).
- Derailleur hanger
- UDH (SRAM Universal Derailleur Hanger)
- Frame warranty
- Limited lifetime warranty on frame, fork and seatpost for the original owner
- Sold via
- Direct to consumer
Photos
Design sketches
Builds & components
Highlighted rows differ between builds. Green marks the best value.
Tempus Frameset | Tempus SRAM Rival AXS | Tempus SRAM Force AXS | Tempus Shimano Dura-Ace Di2 | Tempus SRAM RED AXS | |
|---|---|---|---|---|---|
| Overview | |||||
| Price (MSRP) | $4,999$4,999$4,999 | $5,799$5,799$5,799 | $8,599$8,599$8,599 | $11,499$11,499$11,499 | $11,499$11,499$11,499 |
| Type | Frameset | Complete bike | Complete bike | Complete bike | Complete bike |
| Notes | Frame, fork and seatpost with the Profile Design Wing Ultimate S basebar, 52 ASC extensions, headset, seatpost clamp and UDH hanger. | Ventum will fit a different crank length (165, 170, 172.5 or 175 mm) for $75. No computer mount is included. | Ventum will fit a different crank length (165, 170, 172.5 or 175 mm) for $75. No computer mount is included. | Ventum will fit a different crank length (165, 170, 172.5 or 175 mm) for $75. No computer mount is included. | Ventum will fit a different crank length (165, 170, 172.5 or 175 mm) for $75. No computer mount is included. |
| Drivetrain | |||||
| Groupset | — | SRAM Rival AXS | SRAM Force AXS E1 | Shimano Dura-Ace Di2 R9200 | SRAM Red AXS E1 |
| Launched | — | — | 2025 · current generation | 2021 · current generation | 2024 · current generation |
| Speeds | — | 12-speed | 12-speed | 12-speed | 12-speed |
| Electronic | — | Yes | Yes | Yes | Yes |
| Wireless | — | Yes | Yes | — | Yes |
| Drivetrain | — | 2x | 2x | 2x | 2x |
| Shifters | — | SRAM AXS Wireless Blips | SRAM AXS Wireless Blips | Shimano Dura-Ace Di2 TT shift switches + Di2 satellite switches | SRAM AXS Wireless Blips |
| Position | — | Extensions | Extensions and basebar | Extensions and basebar | Extensions and basebar |
| Crankset | — | SRAM Rival | SRAM Force | Shimano Dura-Ace | SRAM Red |
| Chainrings | — | 48/35 | 48/35 | 52/36 | 48/35 |
| Crank length | — | 165 (S, M) / 170 (L, XL) | 165 (S, M) / 170 (L, XL) | 165 (S, M) / 170 (L, XL) | 165 (S, M) / 170 (L, XL) |
| Power meter | — | — | SRAM Force AXS Power Meter | — | SRAM Red AXS Power Meter |
| Bottom bracket | — | SRAM DUB T47 | SRAM DUB T47 | Wheels Manufacturing T47 outboard | SRAM DUB T47 |
| Standard | — | T47 | T47 | T47 | T47 |
| Front derailleur | — | SRAM Rival AXS | SRAM Force AXS | Shimano Dura-Ace Di2 | SRAM Red AXS |
| Rear derailleur | — | SRAM Rival AXS | SRAM Force AXS | Shimano Dura-Ace Di2 | SRAM Red AXS |
| Cassette | — | SRAM Rival XG-1250 | SRAM Force XG-1270 E1 | Shimano Dura-Ace R9200 | SRAM Red XG-1290 E1 |
| Range | — | 10-36 | 10-36 | 11-30 | 10-36 |
| Speeds | — | 12-speed | 12-speed | 12-speed | 12-speed |
| Chain | — | SRAM Rival | SRAM Force | Shimano Dura-Ace | SRAM Red E1 |
| Brakes | |||||
| Brake calipers | — | SRAM S-900 Aero HRD | SRAM S-900 Aero HRD | Tektro HD-T1910 TT hydraulic | SRAM S-900 Aero HRD |
| Type | — | Hydraulic disc | Hydraulic disc | Hydraulic disc | Hydraulic disc |
| Rotors | — | SRAM Paceline | SRAM Paceline X | Shimano Dura-Ace | SRAM Paceline |
| Front rotor | — | 160 mm | 160 mm | 160 mm | 160 mm |
| Rear rotor | — | 140 mm | 140 mm | 140 mm | 140 mm |
| Mount | — | Center Lock | Center Lock | Center Lock | Center Lock |
| Wheels & tires | |||||
| Wheelset | — | Zipp 404 | Zipp 808 Firecrest | Zipp 808 Firecrest | Zipp 858 NSW |
| Front rim depth | — | — | 80 mm | 80 mm | 80 mm |
| Rear rim depth | — | — | 80 mm | 80 mm | 80 mm |
| Internal rim width | — | — | 23 mm | 23 mm | 23 mm |
| Tubeless ready | — | Yes | Yes | Yes | Yes |
| Rim bead | — | — | Hookless | Hookless | Hookless |
| Tires | — | Schwalbe One Performance RaceGuard | Schwalbe One Performance RaceGuard | Schwalbe One Performance RaceGuard | Schwalbe One Performance RaceGuard |
| Tire width | — | 28 mm | 28 mm | 28 mm | 28 mm |
| Cockpit | |||||
| Basebar | Profile Design Wing Ultimate S | Profile Design Wing Ultimate S | Profile Design Wing Ultimate S | Profile Design Wing Ultimate S | Profile Design Wing Ultimate S |
| Extensions | Profile Design 52ASC | Profile Design 52 A | Profile Design 52ASC | Profile Design 52ASC | Profile Design 52ASC |
| Notes | ASC Pro extensions (325, 350 or 375 mm) are a $600 upgrade. | — | ASC Pro extensions (325, 350 or 375 mm) are a $600 upgrade. | ASC Pro extensions (325, 350 or 375 mm) are a $600 upgrade. | ASC Pro extensions (325, 350 or 375 mm) are a $600 upgrade. |
| Arm pads / cups | Profile Design A3A risers | Profile Design A3A risers | Profile Design A3A risers | Profile Design A3A risers | Profile Design A3A risers |
| Notes | 30 mm of stack | 30 mm of stack | 30 mm of stack | 30 mm of stack | 30 mm of stack |
| Saddle & seatpost | |||||
| Saddle | — | Fizik Aeris SD R5 | Fizik Aeris SD R5 | Fizik Aeris SD R5 | Fizik Aeris SD R5 |
| Saddle width | — | 135 mm | 135 mm | 135 mm | 135 mm |
| Seatpost | Ventum Tempus carbon post | Ventum Tempus carbon post | Ventum Tempus carbon post | Ventum Tempus carbon post | Ventum Tempus carbon post |
| Offset / setback | 0° | 0° | 0° | 0° | 0° |
Tempus price & value
Building up the Tempus Frameset
Included: Arm pads / cups, Basebar, Extensions, Seatpost.
Still to buy: Groupset, Crankset, Cassette, Chain, Brake calipers, Wheelset, Tires, Saddle, Pedals.
Spare & upgrade parts from Ventum
| Part | Part number | Price |
|---|---|---|
| Universal Derailleur Hanger (UDH) | — | $20$20$20 |
| Thru-axle pair (front and rear)Not sold individually; choose the '2025+ GS1, 2026 NS1 (V3), Tempus' option. | — | $60$60$60 |
| Front derailleur braze-on mount | — | $20$20$20 |
| Rear hydration mount (titanium, with Arundel Mandible cage)Holds one bottle of up to 22 oz; Ventum says fitting two cages can break it and voids the warranty. | — | $160$160$160 |
Ownership checklist
3 of 3 known checks pass, 4 not published by Ventum. Why these checks
- ✓
Threaded bottom bracket
T47 threaded
- ✓
UDH derailleur hanger
UDH (SRAM Universal Derailleur Hanger)
- ?
Standard 12×142 mm rear axle
- ?
Works with mechanical shifting
- ✓
Fits third-party aerobars
Profile Design Wing Ultimate S carbon basebar, developed together with Ventum for the Tempus
- ?
Rear disc wheel compatible
- ?
Fit kept when packed
Raced by
Pros who raced the Tempus, with results on it.
© Chelsea Sodaro Chelsea Sodaro2025United States
- 3rdIronman Sweden 2025
Setup: SRAM RED 1x with a 54t chainring, 160 mm cranks, DT Swiss ARC 1100 Dicut DB (65 mm front, 85 mm rear), Continental GP5000 TT TR (25 mm front, 28 mm rear), custom Speedbar cockpit (Kona 2025)
Race setup, 5 parts →Source
© Kagaoua / CC BY-SA 4.0 India Lee2025United Kingdom
- 12th-fastest bike split (4:48:23)Ironman World Championship (Kona) 2025
Setup: SRAM RED AXS, 54/42 chainrings, 165 mm cranks, HED Vanquish 62 front and Jet 180 rear, Continental Archetype tires, Profile Design basebar with Wattshop Anemoi extensions, pads and risers (Kona 2025)
Race setup, 6 parts →Source© Ventum Jason West2024–2025United States
Setup: SRAM RED 2x, 56/43 chainrings, 165 mm cranks, Swiss Side Hadron disc rear with an 80 mm front, Continental GP5000 tubeless tires, Profile Design Wing Ultimate 42 cm with ASC Pro extensions (70.3 Worlds Taupo 2024)
Race setup, 6 parts →Source© Ventum Jocelyn McCauley2025United States
- 7th (4th-fastest bike split, 4:40:27)Ironman World Championship (Kona) 2025
Setup: Shimano Dura-Ace Di2 with a Rotor Aldhu INspider power meter crank, 56/44 chainrings, 155 mm cranks, HED Vanquish V84 front and Jet 180 rear, Profile Design basebar with Fast TT extensions (Kona 2025)
Race setup, 6 parts →Source- Stephanie Clutterbuck2025
United Kingdom
- 14th-fastest bike split (4:49:32)Ironman World Championship (Kona) 2025
Setup: SRAM RED AXS, 56/43 chainrings, 165 mm cranks, Princeton CarbonWorks Wake 6560 front and Mach 7580 rear, Continental GP5000 TT TR 28 mm, Profile Design basebar with Aerogrip pads and extensions, Selle Italia Watt saddle (Kona 2025)
Race setup, 7 parts →Source © Ventum Jackson Laundry2024Canada
Setup: SRAM RED, 56/43 chainrings, 160 mm cranks, Quarq power meter, ENVE SES 6.7 wheels, Continental GP5000 TT TR 28 mm, Profile Design Wing Ultimate basebar with Fast TT cockpit parts, BiSaddle Hurricane Pro 3D saddle (Kona 2024)
Race setup, 7 parts →Source
Tempus geometry
| S | M | L | XL | |
|---|---|---|---|---|
| Stack | 466 mm18.3″ | 502 mm19.8″ | 521 mm20.5″ | 539 mm21.2″ |
| Reach | 387 mm15.2″ | 417 mm16.4″ | 431 mm17″ | 444 mm17.5″ |
| Pad stack min | 582 mm22.9″ | 618 mm24.3″ | 637 mm25.1″ | 655 mm25.8″ |
| Pad stack max | 652 mm25.7″ | 688 mm27.1″ | 707 mm27.8″ | 725 mm28.5″ |
| Pad reach min | 382 mm15″ | 412 mm16.2″ | 426 mm16.8″ | 439 mm17.3″ |
| Pad reach max | 487 mm19.2″ | 517 mm20.4″ | 531 mm20.9″ | 544 mm21.4″ |
| Seat angle min | 82° | 82° | 82° | 82° |
| Seat angle max | 82° | 82° | 82° | 82° |
| Head tube angle | 72.6° | 72.5° | 72.5° | 72.5° |
| Head tube length | 47 mm1.9″ | 86 mm3.4″ | 106 mm4.2″ | 125 mm4.9″ |
| Effective top tube | 452 mm17.8″ | 488 mm19.2″ | 504 mm19.8″ | 520 mm20.5″ |
| Seat tube length | 523 mm20.6″ | 559 mm22″ | 579 mm22.8″ | 597 mm23.5″ |
| Chainstay | 410 mm16.1″ | 410 mm16.1″ | 410 mm16.1″ | 410 mm16.1″ |
| Wheelbase | 948 mm37.3″ | 991 mm39″ | 1,011 mm39.8″ | 1,029 mm40.5″ |
| BB drop | 76 mm3″ | 75 mm3″ | 75 mm3″ | 75 mm3″ |
| Trail | 61 mm2.4″ | 61 mm2.4″ | 61 mm2.4″ | 61 mm2.4″ |
| Front centre | 562 mm22.1″ | 603 mm23.7″ | 623 mm24.5″ | 642 mm25.3″ |
| Standover | 790 mm31.1″ | 826 mm32.5″ | 845 mm33.3″ | 863 mm34″ |
| Crank length | 165 mm6.5″ | 165 mm6.5″ | 170 mm6.7″ | 170 mm6.7″ |
Side view & pad range
Drawn to scale (how to read it).
How the geometry rides
The Tempus in size M against the middle size of 14 other bikes: tendencies from geometry, not a ride review (how to read this).
- Trail61 mm2.4″
shortestlonger than 32% of 14 bikeslongest
- Wheelbase991 mm39″
shortestlonger than 33% of 42 bikeslongest
- Front centre603 mm23.7″
shortestlonger than 72% of 29 bikeslongest
- Chainstay410 mm16.1″
shortestlonger than 75% of 53 bikeslongest
Long chainstays: adds stability and room for a rear wheel with wide tyres.
Good to know
Design
Slowtwitch weighed a size L Rival AXS build at 20 lb 15 oz (about 9.5 kg), and 19 lb 10 oz (about 8.9 kg) with Zipp Super-9 and 858 NSW wheels.
SourceAerodynamics
Ventum says the wide fork routes clean air past the front wheel onto the rider's legs, and the airfoil seat stays guide air off the back of the legs and help shield the rear wheel at higher yaw angles.
SourceFit
Pad stack and reach ranges in the geometry are for the stock 52 ASC extensions. Ventum publishes a separate chart for the ASC Pro upgrade.
SourceIntegration
There is no hydration or storage built into the frame. Slowtwitch notes several bottle mounting points and a rear bottle holder built into the stock Fizik Aeris SD R5 saddle.
SourceHistory
Pros raced the Tempus for about nine months before its public launch in March 2025; Jackson Laundry rode one at the 2024 Ironman World Championship in Kona. At launch the builds were priced at $4,999 (Rival AXS), $6,499 (Force AXS), $9,999 (RED AXS) and $10,999 (Dura-Ace Di2).
Source
Tempus FAQ
Is the Ventum Tempus UCI legal?+
Yes. The Ventum Tempus is UCI legal, so it can be raced in draft-illegal triathlon as well as UCI time trials.
How much does the Ventum Tempus cost?+
Manufacturer prices (MSRP): $4,999–$11,499 across 5 listed builds and framesets: Tempus Frameset, Tempus SRAM Rival AXS, Tempus SRAM Force AXS, Tempus Shimano Dura-Ace Di2 and Tempus SRAM RED AXS.
What sizes does the Ventum Tempus come in?+
4 sizes: S, M, L and XL.
What pad stack and pad reach can the Ventum Tempus reach?+
Across all sizes, pad stack ranges from 582 mm (22.9″) to 725 mm (28.5″), and pad reach from 382 mm (15″) to 544 mm (21.4″). Use the fit finder to check which size covers your position.
What seat angle does the Ventum Tempus have?+
82° effective seat tube angle.
Does the Ventum Tempus have integrated hydration?+
The Ventum Tempus has no integrated hydration system.
What is the tire clearance of the Ventum Tempus?+
Up to 30 mm tires on 700c wheels.
Which groupsets are compatible with the Ventum Tempus?+
Drivetrain compatibility: Electronic (Shimano Di2 and SRAM AXS builds offered); UDH derailleur hanger. Bottom bracket: T47 threaded.
What builds of the Ventum Tempus are available?+
Tempus SRAM Rival AXS: SRAM Rival AXS; Tempus SRAM Force AXS: SRAM Force AXS E1; Tempus Shimano Dura-Ace Di2: Shimano Dura-Ace Di2 R9200; Tempus SRAM RED AXS: SRAM Red AXS E1.
Can I fit my own aerobars on the Ventum Tempus?+
Yes, third-party aerobars can be used on the Ventum Tempus. Profile Design Wing Ultimate S carbon basebar, developed together with Ventum for the Tempus
Which pros ride the Ventum Tempus?+
Chelsea Sodaro, India Lee, Jason West, Jocelyn McCauley, Stephanie Clutterbuck and Jackson Laundry raced this generation of the Ventum Tempus. See the "Raced by" section for seasons and results.
Is the Ventum Tempus easy to travel with?+
Ventum ships bikes in a ride-ready box: about 98% assembled within the continental US (fit wheels and seatpost), about 85% elsewhere (stem also to fit).
What warranty does the Ventum Tempus frame have?+
Limited lifetime warranty on frame, fork and seatpost for the original owner
Is the Ventum Tempus aerodynamic?+
Up to 15 W faster than the Ventum One Disc in certain conditions and configurations (CFD and wind tunnel)
Sources
- https://ventumracing.com/products/tempus/
- https://ventumracing.com/tempus-frameset/
- https://ventumracing.com/tempus-rival-axs/
- https://ventumracing.com/tempus-force-axs/
- https://ventumracing.com/tempus-dura-ace-di2/
- https://ventumracing.com/tempus-red-axs/
- https://slowtwitch.com/news/the-tempus/
- https://slowtwitch.com/news/bikes-of-kona-2024-jackson-laundry/
- https://ventumracing.com/universal-derailleur-hanger-udh/
- https://assets.ctfassets.net/761l7gh5x5an/7jA9krKzzy3lRXPzlm4uyn/7982d7114b9d62978cb87876ea476535/58780c70-6247-4448-8384-b145fa30aba9.pdf
- https://www.slowtwitch.com/triathlon/chelsea-sodaro-is-looking-to-ride-her-custom-ventum-tempus-to-another-ironman-world-title/
- https://slowtwitch.com/triathlon/kona-2025-the-bikes-of-the-fastest-pro-riders/
- https://www.slowtwitch.com/triathlon/jason-wests-ventum-tempus/
- https://ventumracing.com/thru-axle-pair/
- https://ventumracing.com/front-derailleur-braze-on-mount/
- https://ventumracing.com/rear-hydration-mount/
Ventum Tempus data last updated · How the data is checked ·