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The Ventum Tempus Dura Ace Di2 TT and Triathlon bike comes with Shimano’s top-end electronic shifting.
The Ventum Tempus Dura Ace Di2 TT and Triathlon bike comes with Shimano’s top-end electronic shifting.

TEMPUS DURA ACE DI2

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To put it simply, the Ventum Tempus is our fastest and most competitive TT and Triathlon bike yet. 

 

Engineered over thousands of hours, rooted in a decade of feedback from some of the best athletes in the world, and proven in real-world testing, it’s the bike you want for days when going excruciatingly fast is the only priority — for when you’re driven to not just beat your personal best, but also everybody else. 

 

This model of the Tempus is equipped with the top-end Shimano Dura Ace Di2 electronic drivetrain and ZIPP 808 Firecrest wheels.

 

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$10,999.00
CUSTOMIZE YOUR FIT (OPTIONAL)+
Do you want a specific crank length and/or handlebar size? Our bikes come stock with touchpoints that fit most riders, but you can choose your bar/stem size and crank length for a small fee. Questions? Reach out to support for help.
WHAT IS THE STOCK FIT?
Finance with Klarna
Pay over time with monthly financing*
*Monthly financing through Klarna issued by WebBank.
Ride-Ready Shipping
New bike day, shipped direct to your door. Each bike is pre-assembled and tuned by a professional mechanic before being packed into our custom ride-ready box (lower 48 US States only). Assembly is easy — just attach the wheels and insert the seatpost.
30-Day Returns
Change your mind? Return your bike within 30-days of purchase.
Limited Lifetime Warranty
We stand behind our bikes. Ventum offers a limited lifetime warranty on all of our frames, forks, and seat posts to the original owner which covers against defects in materials and workmanship.
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The Ventum Tempus Dura Ace Di2 TT and Triathlon bike comes with Shimano’s top-end electronic shifting.

TEMPUS DURA ACE DI2

$10,999.00
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ABOUT THE VENTUM TEMPUS DURA ACE Di2

 

Tip to tail, the surface of the Tempus has been engineered with airflow in mind. Beginning at the head tube, functional airfoils taper backward the full length of the frame, working together to strategically smooth and direct air as it passes over rider and bike. Combined with its uniquely wide-set fork and seat stays that channel clean air around some of the more problematically turbulent areas, the entire bike is engineered with one goal in mind: Make clean air.

 

Thousands of hours of engineering, rigorous CFD analysis, and iterative wind tunnel testing fueled the design of the Tempus, and that design has been proven in the real world. Benchmarked against its predecessor, the Ventum One Disc, the Tempus tests up to 15 watts faster in certain conditions and configurations.

 

Though the aerodynamic arms race among bike companies is what grabs the most attention, a fast bike is a balance between aerodynamics, handling, and functional design. Races are won on real roads; with hills, curves, and a whole host of other terrain to navigate. We didn’t forget this.

 

Fast on paper must be fast in the real world. Our engineering team leaned on collective decades of experience to carefully build a bike that is lighter, simpler, and livelier than its predecessor. We gave the Tempus an aggressively steep seat tube angle to place the rider more forward and on top of the pedals and stiffened the front end to give the bike scalpel-like precision in corners. Most notably, though, the Tempus is very light. Our careful attention to carbon layup and mission of simplicity stripped the fat from the frame. 

 

Light, efficient, and simple, we wanted to push the envelope of aerodynamic efficiency without sacrificing real-world ride quality. Incredibly aero, but also snappy in corners and stable in crosswinds, the Tempus is made to inspire confidence anywhere from the windswept lava fields of Kona to the mountains of Nice.

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 CUSTOMER SUPPORT + RIDE READY SHIPPING

 

Each Ventum bike begins life at our facility in Heber City, Utah, at the doorstep of some of the best riding this side of… anywhere.

 

No matter the build, any bike we send out into the world is first built, checked, and thoroughly tuned by a professional mechanic. With a bill of good health, it’s then repackaged into a specially-made ride-ready box designed to transport the bike to the rider with as little disassembly as possible. 

 

We’re here to help along the way. From picking your bike to support down the road, the Ventum customer support team is here for anything you need. 

VENTUM TEMPUS DURA ACE DI2 FEATURES

WIDE IS THE NEW NARROW

 

Jutting far outboard of the frame, the 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 the front wheel and onto the rider's legs, avoiding turbulence caused by the wheel and creating a shrouding effect over one of the most aerodynamically problematic body parts.  

 

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

 

AN ULTRA-ADJUSTABLE FRONT END


We partnered with Profile Design to engineer the 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 the 52 ASC aerobar extension, riders also have the option to upgrade their cockpit to the semi-custom ASC Pro extensions. 

 

FAST SHOULD FEEL FAST


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

 

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

 

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

 

VENTUM TEMPUS - SHIMANO DURA ACE Di2 - 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, disc brake | 80mm rim depth | Hookless | 23mm ID
REAR WHEEL
ZIPP 808 Firecrest carbon fiber rear wheel | Tubeless, disc brake | 80mm rim depth | Hookless | 23mm ID | XDR Driver
TIRES
Schwalbe One | Performance RaceGuard | 700x28c
MAX TIRE SIZE
700x30c
DRIVETRAIN
SHIFTERS (EXTENSIONS)
Shimano Dura Ace Di2 TT Shift Switch
SHIFTERS (BASE BAR)
Shimano Di2 Satelite Shifter Switches
FRONT DERAILLEUR
Dura Ace Di2 2x12-speed | Electronic Shifting
REAR DERAILLEUR
Dura Ace Di2 2x12-speed | Electronic Shifting
CRANK
S: Shimano Dura Ace Crankset | 52/36T chainrings | 165mm crank length
M: Shimano Dura Ace Crankset | 52/36T chainrings | 165mm crank length
L: Shimano Dura Ace Crankset | 52/36T chainrings | 170mm crank length
XL: Shimano Dura Ace Crankset | 52/36T chainrings | 170mm crank length
BOTTOM BRACKET
Wheels Manufacturing T47 Outboard BB
CASSETTE
Shimano Dura Ace | CS-R9200 | 11-30T
CHAIN
Shimano Dura Ace
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 | Optional upgrade: Profile Design ASC Pro
RISER KIT
Profile Design A3A Risers | 30mm of stack
COMPUTER MOUNT
Not included
BRAKES
Tektro TT Hydro HD-T1910 | Hydraulic
BRAKE ROTORS
Shimano Dura Ace Centerlock Brake Rotor | 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

Please note: Ventum reserves the right to make changes to the information listed on this page at any time. This includes spec, pricing, color, and any other product details. Due to supply chain issues, compatible parts may be substituted at any time without notice. 

VENTUM TEMPUS SIZING GUIDE | CHOOSING YOUR FRAME SIZE 

 

Sizing a TT and Triathlon bike can be tricky, so we always recommend working with a bike fitter for those who can. If you haven't worked with a fitter, use your height and inseam (measured in inches) and reference the below chart to choose the correct Tempus frame size. 

 

If you know your required pad stack and reach coordinates, that information can be found in charts further down this page. 

 

For questions or help, please reach out to the Ventum Customer Service team. 

SIZING GUIDE | PAD STACK/REACH | 52 ASC AEROBAR EXTENSIONS 

 

The Tempus Dura Ace Di2 comes stock with Profile Design 52 ASC carbon aerobar extensions. The pad stack and pad reach envelopes for each frame size are shown in the below chart. 

SIZING GUIDE | PAD STACK/REACH | UPGRADED PROFILE DESIGN ASC PRO AEROBAR EXTENSIONS

 

You also have the option to upgrade the aerobar extensions on the Tempus Dura Ace Di2 to the Profile Design ASC PRO aerobar extensions. The pad stack and pad reach envelopes for the ASC Pro are shown below.  

VENTUM TEMPUS GEOMETRY

FRAME SIZE S M L XL
(A1) FRAME STACK 466mm 502mm 521mm 539mm
(A2) PAD STACK [ASC 52/52A Extension] 582-652mm 618-688mm 688-707mm 655-725mm
(B1) FRAME REACH 387mm 417mm 431mm 444mm
(B2) PAD REACH [ASC 52/52A Extension] 382-487mm 412-517mm 426-531mm 439-544mm
(C) HEAD TUBE LENGTH 47mm 86mm 106mm 125mm
(D) CHAINSTAY LENGTH 410mm 410mm 410mm 410mm
(E) FRONT CENTER 562mm 603mm 623mm 642mm
(F) WHEELBASE 948mm 991mm 1011mm 1029mm
(G) BOTTOM BRACKET DROP 76mm 75mm 75mm 75mm
(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 452mm 488mm 504mm 520mm
(K) PHYSICAL SEAT TUBE LENGTH 523mm 559mm 579mm 597mm
(L) EFFECTIIVE SEAT TUBE LENGTH 470mm 506mm 526mm 544mm
(M) STAND OVER HEIGHT 790mm 826mm 845mm 863mm
(N) TRAIL 61mm 61mm 61mm 61mm

VENTUM TEMPUS SERVICE 

 

VENTUM TEMPUS - SHIMANO DURA ACE Di2 - ZIPP 808 FIRECREST

CONTACT SUPPORT

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Home Reviews 1

"Ironman Sweden was my first race on my new bike from Ventum, a Shimano Dura Ace 12-speed. The aero comfort is easy to adjust to the perfect fit and with the fantastic disc brakes it is easy to keep a good rhythm through the corners. With the Ventum One, I achieved my fastest bike split at Ironman Sweden."

- Jesper Svensson

Home Reviews 2

“There is nothing I would rather use to sail the gravel seas of eastern Nebraska than my GS1 (except for maybe a tandem). Its smooth comfort allowed me to carry my speed and momentum over the tops of every one of the endless rollers on the Gravel Worlds course. I was able to open gaps through the loose corners all day long, thanks to the bike’s stability and nimble handling, and there’s just no arguing with a 22 mph average speed over 150 miles, with 11,000 feet of elevation gain, on a course that’s 98% gravel, on my way to 2nd place out of a very talented pro field."

- John Borstelmann

Home Reviews 3

"The GS1 is everything I want in a gravel bike. The combination of smooth cruising on pavement and steady rolling over rowdy terrain makes it the most dynamic bike. From champagne gravel to chunky single track, my GS1 has performed beautifully through it all. Let’s not forget that it has ample tire clearance and is aesthetically stunning!"

- Lindsey Stevenson

SUPPORT

We Stand Behind Our Products

Ventum stands behind the quality our bikes, engineering, and all of our products. Each item is meticulously desined in-house by our team of passionate riders. Our goal is to elevate your experience and to deliver products that can withstand all normal rugged wear and tear that comes with competing in a triathlon, running a crit series, or enjoying a long gravel road to nowhere.

If you are not satisfied with your order, contact our customer support team about our 30-day return policy or let us know how we can make Ventum better.

Sizing

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Ordering, Shipping, Warranty, & Returns

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Lead time varies depending on the build specs and component availability. Please reach out to support@ventumracing.com for more information.

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For Standard shipping in the continental US, Ventum uses a custom, oversized bike box and the bike will arrive 98% assembled. You simply need to install the wheels and seatpost and you’ll be ready to ride. A torque wrench is required.

For bikes shipped outside of the continental US, the bike will arrive 85% assembled. Upon delivery, you will need to install the wheels, seatpost, and the stem onto the steerer tube.

Financing & Trade-Ups

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Submit your bike directly to The Pro’s Closet, and share their offer with support@ventumracing.com. The trade-up value will be deducted from your order total. We’ll need to email you a custom invoice, so don’t order online before speaking with Ventum Support. The trade-up bike will need to be shipped to The Pro’s Closet within 2 weeks–we supply the shipping label.

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Yes, we offer financing through Klarna for most customers in the USA.

General Product Information

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Ventum One Disc - 28mm max (700x28C)

NS1 - Tires measuring up to 35mm in width (700x35C)

GS1 - Tires measuring up to 48mm in width (700x48C) *The GS1 can run 650b wheels, with tires measuring up to 51 mm in width

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NS1 and Ventum One Disc builds will be set up tubeless when upgraded to carbon wheelsets. Alloy wheels are setup with inner tubes and clincher tires.

All GS1 builds will be set up tubeless regardless of the wheelset.