About The Ventum Tempus Carbon Dura-Ace Di2 Triathlon Bike

The Ventum Tempus Carbon Dura-Ace Di2 Triathlon Bike is Ventum's dedicated time trial and triathlon race frame, built here with a full Shimano Dura-Ace Di2 2x12-speed electronic drivetrain and ZIPP 808 Firecrest carbon wheels. It's built for one use case: racing solo against the clock, whether that's a triathlon bike leg or a standalone time trial. The full carbon frame and fork are shaped tip to tail for airflow, with internal cable and brake routing keeping the surface clean.

Its aerodynamics were paired with handling in mind. Functional airfoils taper the length of the frame, and a wide-set fork and seat stays route turbulent air around the rider. Ventum benchmarked the Tempus against its predecessor, the Ventum One Disc, and found it tests up to 15 watts faster in certain conditions. A steeper seat tube angle puts the rider further forward over the pedals, and a stiffened front end holds a line through corners rather than just cutting through wind on the straights.

Who It's For

  • Triathletes and time trialists racing at a level where a dedicated aero frame and electronic shifting are worth the investment

  • Riders who want a top-tier build out of the box: Dura-Ace Di2, Zipp 808 Firecrest wheels, and a full carbon cockpit

  • Riders planning a professional fit, since stack and reach are set through the extensions and riser kit rather than a standard road stem

  • Not for riders who need one bike for both group rides and racing — this is a single-purpose TT/triathlon frame

What to Look For

  • Frame size and crank length: S and M ship with 165mm cranks, L and XL with 170mm — confirm fit before ordering

  • Cockpit adjustability: Profile Design A3A risers add 30mm of stack, and the 52 ASC extensions can be upgraded to Profile Design ASC Pro — worth a conversation with a fitter

  • Tire clearance: ships with 700x28c Schwalbe One tires, clears up to 700x30c for rough race surfaces

Key Features

The frame and fork are full carbon with a T47 threaded bottom bracket, flat mount disc brakes, and a UDH rear dropout, all internally routed for a clean surface. Airfoils run the full length of the frame and work with the wide-set fork and seat stays to manage airflow around the rider, the most disruptive part of the system on any TT bike.

The Shimano Dura-Ace Di2 2x12-speed drivetrain shifts electronically from the TT shift switch on the extensions or the satellite shifters on the base bar, so you never reach off the aero position to change gears. It's paired with a 52/36T crank and an 11-30T Dura-Ace cassette for range on both flat time trials and hillier triathlon courses.

Braking runs through Tektro TT Hydro hydraulic calipers with Dura-Ace Centerlock rotors (160mm front, 140mm rear) — more relevant on triathlon courses with technical descents than closed-course time trials. The ZIPP 808 Firecrest wheels are tubeless, hookless, 80mm deep, with a 23mm internal width, built for sustained speed over everyday versatility.

Rider Intent Summary

  • Biggest strengths: full Dura-Ace Di2 electronic shifting, Zipp 808 Firecrest wheels, and an aero frame benchmarked up to 15 watts faster than its predecessor

  • Tradeoffs: single-purpose race geometry with no computer mount included, and fit relies on professional setup of the extensions and riser kit rather than an off-the-shelf position

  • What makes it different: a steeper seat tube angle and stiffened front end aimed at real-world handling, not just wind tunnel numbers

Victory's Take

 

We think the Tempus Dura-Ace Di2 is built for the rider who's already decided racing is the priority, not still deciding whether they need a dedicated TT bike. At Victory Bicycle Studio, we'd want to get you on our fit bench first — with a race-specific position like this, the frame is only half the equation.

 

What you get

  • Shimano Dura Ace Di2 12-speed electronic drivetrain 
  • ZIPP 808 Firecrest carbon race wheels
  • Profile Design Wing Ultimate S carbon base bar
  • Profile Design 52 ASC carbon aerobar extensions
  • An ultralight full carbon fiber frame with intuitive internal cable routing 
  • Tire clearance to 700x30c 
Ventum Tempus Carbon Dura-Ace Di2 Triathlon Bike

Ventum

Ventum Tempus Carbon Dura-Ace Di2 Triathlon Bike

Regular price $11,499.00 USD
Sale price $11,499.00 USD Regular price $0.00 USD

features

  • Wide is the New Narrow

    Jutting far outboard of the frame, Tempus' wide-set fork and equally wide seat stays are designed for one purpose: To create clean air.

    The wide fork channels clean air past front wheel and onto rider's legs, avoiding turbulence caused by wheel and creating a shrouding effect over one of the most aerodynamically problematic body parts.

    Just behind legs, airfoils on wide seat stays not only direct air from the back of legs over and around wheel, but also help shroud the rear wheel at higher yaw angles.

  • An Ultra-Adjustable Front End

    Ventum partnered with Profile Design to engineer Tempus in tandem with their all-new Wing Ultimate S base bar.

    Uncomplicated, incredibly aero, and extensively adjustable, the Profile Design cockpit systems gives riders and bike fitters the power to precisely dial in the front end position.

    Equipped with 52 ASC aerobar extension, riders also have option to upgrade their cockpit to semi-custom ASC Pro extensions.

  • Fast Should Feel Fast

    Aerodynamic optimization can only take you so far. A fast bike is balance between aerodynamics, handling, and functional design.

    An aggressively steep seat tube angle and strategic stiffening of front end means the Tempus feels as fast as it looks on paper. It's also wickedly light, which helps make bike feel more lively and responsive.

    Feedback from our pros says we nailed it: They've raved about the Tempus' nimble yet stable handling.

Specifications

Frameset
Frame

Ventum Tempus TT & Triathlon frame

- Full carbon fiber construction

- Internal cable routing

- T47 threaded BB

- Flat mount disc brake

- UDH

Fork

Ventum Tempus TT & Triathlon fork

- Tapered carbon steerer

- Internal brake routing

- Flat mount disc brake

- Carbon dropouts

Wheels
Front Wheel

ZIPP 808 Firecrest carbon fiber front wheel

- Tubeless Ready

- Disc brake

- 80mm rim depth

- Hookless

- 23mm internal depth

Rear Wheel

ZIPP 808 Firecrest carbon fiber rear wheel

- Tubeless ready

- Disc brake

- 80mm rim depth

- Hookless

- 23mm internal depth

- XDR Driver

Tires

Schwalbe One Performance RaceGuard, 700x28c

Max Tire Size

700x30c

Drivetrain
Shifters (Extensions)

SRAM eTap AXS Wireless Blips

Shifters (Base Bar)

SRAM eTap Blips

Front Derailleur

SRAM Force AXS, 2x12 speed, Electronic shifting

Rear Derailleur

SRAM Force AXS, 2x12 speed | Electronic shifting

Crank

S: SRAM Force Crankset | Power Meter Included | 48/35T chainrings | 165mm crank length

M: SRAM Force Crankset | Power Meter Included | 48/35T chainrings | 165mm crank length

L: SRAM Force Crankset | Power Meter Included | 48/35T chainrings | 170mm crank length

XL: SRAM Force Crankset | Power Meter Included | 48/35T chainrings | 170mm crank length

Bottom Bracket

SRAM DUB T47

Cassette

SRAM XG 1270 E1, 10-36T

Chain

SRAM Force

Components
Saddle

Fizik Aeris SD R5 135mm

Seatpost

Ventum carbon post, 0° offset

Base Bar

Profile Design Wing Ultimate S

Extensions

Profile Design 52 ASC

Riser Kit

Profile Design A3A Risers, 30mm of stack

Computer Mount

Not included

Brakes

SRAM S900

Brake Rotors

SRAM Centerlock Paceline X, 160mm Front / 140mm Rear

Stock Fit Information
S

165 mm crank length

M

165 mm crank length

L

170 mm crank length

XL

170 mm crank length

Geometry

Frame Size S M L XL
(A1) Frame Stack 466 502 521 539
(A2) Pad Stack [ASC 52/52A Extension] 582-652 618-688 637-707 655-725
(B1) Frame Reach 387 417 431 444
(B2) Pad Reach [ASC 52/52A Extension] 382-487 412-517 426-531 439-544
(C) Head Tube Length 47 86 106 125
(D) Chainstay Length 410 410 410 410
(E) Front Center 562 603 623 642
(F) Wheelbase 948 991 1011 1029
(G) Bottom Bracket Drop 76 75 75 75
(H) Seat Tube Angle 82° 82° 82° 82°
(I) Head Tube Angle 72.6° 72.5° 72.5° 72.5°
(J) Top Tube Length, Horizontal 452 488 504 520
(K) Physical Seat Tube Length 523 559 579 597
(L) Effective Seat Tube Length 470 506 526 544
(M) Stand Over Height 790 826 845 863
(N) Trail 61 61 61 61
Frame Size S M L XL
(A1) Frame Stack 18.3" 19.8" 20.5" 21.2"
(A2) Pad Stack [ASC 52/52A Extension] 22.9"-25.7" 24.3"-27.1" 25.1"-27.8" 25.8"-28.5"
(B1) Frame Reach 15.2" 16.4" 17.0" 17.5"
(B2) Pad Reach [ASC 52/52A Extension] 15.0"-19.2" 16.2"-20.4" 16.8"-20.9" 17.3"-21.4"
(C) Head Tube Length 1.9" 3.4" 4.2" 4.9"
(D) Chainstay Length 16.1" 16.1" 16.1" 16.1"
(E) Front Center 22.1" 23.7" 24.5" 25.3"
(F) Wheelbase 37.3" 39.0" 39.8" 40.5"
(G) Bottom Bracket Drop 3.0" 3.0" 3.0" 3.0"
(H) Seat Tube Angle 82° 82° 82° 82°
(I) Head Tube Angle 72.6° 72.5° 72.5° 72.5°
(J) Top Tube Length, Horizontal 17.8" 19.2" 19.8" 20.5"
(K) Physical Seat Tube Length 20.6" 22.0" 22.8" 23.5"
(L) Effective Seat Tube Length 18.5" 19.9" 20.7" 21.4"
(M) Stand Over Height 31.1" 32.5" 33.3" 34.0"
(N) Trail 2.4" 2.4" 2.4" 2.4"
Geometry

Highlights

GRAVEL AS YOU'VE NEVER FELT

BREED represents FELT’s vision of gravel without compromise. A true race platform engineered not just for winning at the front, but for every rider who lines up to race hard and push limits when the course stops playing nice

HighlightsHighlights

Frequently Asked Questions

How is the bike packaged and how long does delivery take?

All bikes are securely packaged to ensure that damage doesn't occur during shipping. All parts of the bike are padded and if needed, zip tied to minimize or eliminate movement inside the box. Once a bike is handed to the shipping company (usually Fedex or UPS), depending on your location, delivery will range from 1 day to 8 days. If you do choose the option for Professional Assembly or White Glove Delivery, this can add anywhere from 2 days to 5 days to the lead time.

Can I finance the purchase of my new bike?

Yes.  Simply select the Shop Pay Installments option which will allow you to buy now and pay later.  Shop Pay Installments is powered by Affirm.  If you would like to determine your spending limit, simply download the Shop app or the Affirm app on your smartphone and after you create an account on one of these apps, the app will let you know what is your spending limit.

Can I return the bike if it doesn't suit my needs?

Our return process is as follows. The customer is responsible for the return label ($150). Once the returned bike arrives at our warehouse, our team will inspect it and make sure it is in new condition and undamaged. Once we verify, we will process the return and issue a refund to the original payment method on file. To clarify the amount refunded, it would just be the amount of the bike (and tax if applicable) less the $150 shipping label that we provided, but the original shipping is not refunded. So if the original bike cost $4,500 and shipping was $150 (so you paid $4,650), you would be refunded $4,350 (the $4,500 less $150 for the return label) assuming the bike was returned in new and un-used condition and within the 30 day return period.

What does the warranty of my new bike or product cover and what is the warranty period?

Depending on the bike or any product, different companies have different warranty policies.  If you do ever have an issue with your bike or any product, simply email us at online@victorybicyclestudio.com and we will assist with any warranty issues and clarify the warranty for the affected product.

Can I have my bike serviced at any bike shop?

Typically, to avoid any issues with your warranty, you should bring your bike to a certified mechanic or bike store for that bike (i.e. if you have a Trek bicycle, you should bring the bike to be serviced to a local bike store that is an authorized Trek dealer).  If you need assistance, simply email us at online@victorybicyclestudio.com and we can direct you to a certified dealer of your bike.

Do you ship bikes internationally?

We unfortunately do not ship bikes outside of the 48 contiguous states of the United States. We do recommend for international customers to open (or use a current account) account with a freight forwarding company. If you use a freight forwarding company located in the U.S., make sure to put your billing address for a dedicated credit card as the same address as the freight forwarder so that you don't have any credit card or payment method issues).

Once you do this, simply place an order with us and we can ship to the U.S. address as long as the credit card doesn't get rejected. Once the freight forwarder has the box/order/shipment, you would instruct them to then ship to you in your home country and they would charge you their own shipping charge to ship to your international address.

Do you offer free shipping?

We do offer free shipping on non-bike orders over $100. We do not offer free shipping for bicycles unless it is a one time promotion. Generally, bike shipping will cost $150 and that covers just the shipping of the bike with no assembly. If you were to bring that bike to your local mechanic or bike store, you would pay them their assembly fee. If you choose our Professional Assembly option for $200, our service technicians would assemble the bike before shipping and then re-pack the bike safely for transit. When you receive the bike you would attach the front wheel, attach the seatpost/saddle, and raise the handlebars and clamp them. Those three items do have to be detached to minimize or eliminate the chance of damage in transit.

How much does shipping cost?

For orders of parts, accessories, apparel, etc. on orders under $100, shipping is a flat rate of $9.99. Regular bike shipping without assembly is $150, bike shipping with Professional Assembly is an additional $200 (so $350 in total which includes the $150 of regular shipping). Our White Glove Delivery option is $699 and that will cover the assembly of the bike and our White Glove Delivery partner delivering your dream bike to your front door, ready to ride!

How can I track my order?

When you place your online order, you will receive an instantaneous email update with your order number and order details, and shortly after, you will receive a follow up order email with the tracking number for your order.  If you still need assistance with your order, feel free to email us at online@victorybicyclestudio.com and we will respond asap.

What happens if my package arrives damaged?

If your package arrives damaged, email online@victorybicyclestudio.com with pictures of all angles of the box and pictures of the damaged product and we will work with you to either send a new replacement asap and coordinate return (or re-imburse you for labor or costs incurred to fix the issue at your local bike store).

Are pedals included with the bike?

If you do not see pedals in the bullet point product specs on the product page, the bike does not come equipped with pedals.  Many manufacturers do not spec bikes with pedals, so they are often purchased separately.

If I only pay the $150 for bike shipping, can I assemble the bike on my own?

Victory Bicycle Studio highly recommends that you bring your bike to your local certified bike store for the brand of the bike that you purchased. If you do attempt to assemble the bike and damage occurs, this may result in your warranty not being honored. For that reason, we do highly recommend to select our Professional Assembly option for $299.