The second generation of the Ventum One is a dedicated long-course triathlon platform defined by its unconventional non-double-diamond frame. By eliminating the traditional down tube and seat stays, Ventum prioritizes aerodynamic efficiency and straight-line speed over weight savings or climbing agility. This iteration brings the platform up to modern standards with the addition of flat-mount hydraulic disc brakes and fully internal cable routing. Designed specifically for the demands of 70.3 and Ironman distances, the bike integrates a 1.2- to 1.4-liter hydration reservoir directly into the top tube, paired with a tool-free storage compartment tucked underneath. It is a highly specialized machine built for athletes who want to settle into an aerodynamic tuck and maintain a steady, high-speed tempo for hours, rather than those looking for a reactive, lightweight chassis for technical courses.
| Stack | 545mm |
| Reach | 422mm |
| Top tube | 500mm |
| Headtube length | 132mm |
Ventum accommodates a broad range of rider postures through a highly adjustable front end and six distinct frame sizes. The cockpit relies on a single-post aerobar riser system that provides 7.5 centimeters of vertical adjustment. This monopost design pairs with a telescoping, reversible stem offering an effective reach range of 47 to 127 millimeters, making it relatively simple to dial in pad placement without disconnecting hydraulic lines.
The frame geometry is tuned for predictability rather than sharp cornering. A size 56 utilizes a 622-millimeter front-center and a 1021-millimeter wheelbase, dimensions that keep the steering calm and steady when tucked into the extensions. Further influencing the bike's footprint is a redesigned, ultra-wide fork. This widened stance improves aerodynamic flow while easily clearing 28c tires, allowing riders to run lower pressures for improved mechanical grip and vibration damping on rougher pavement.
Frameset
Frame
Ventum One Disc Triathlon frame | Full carbon fiber construction | Internal cable routing | Internal Hydration Resevoir | Flat mount disc brake
Fork
Ventum One Disc Triathlon fork | Tapered carbon steerer | Internal brake routing | Flat mount disc brake
Groupset
Shift levers
Shimano Dura Ace Di2 TT Shift Switch (Extensions) / Dura Ace Di2 TT/Triathlon Dual Control Lever (Base Bar)
Front derailleur
Dura Ace Di2 2x12-speed | Electronic Shifting
Rear derailleur
Dura Ace Di2 2x12-speed | Electronic Shifting
Cassette
Shimano Dura Ace | CS-R9200 | 11-30T
Chain
Shimano Dura Ace
Crankset
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 PF30
Front brake
Shimano Dura Ace | Hydraulic
Rear brake
Shimano Dura Ace | Hydraulic
Front rotor
160mm
Rear rotor
140mm
Wheelset
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 | HG Driver
Front tire
Schwalbe One | Performance RaceGuard | 700x28c
Rear tire
Schwalbe One | Performance RaceGuard | 700x28c
Cockpit
Stem
Ventum One Disc Aerobar System
Handlebars
Ventum One Disc Aerobar System
Saddle
Fizik Aeris SD R5 135mm
Seatpost
Ventum carbon post | 0° offset
The current Ventum One lineup is streamlined into two premium, identically priced builds at $9,690, differentiated only by their electronic drivetrains. Riders can choose between a Shimano Dura-Ace Di2 configuration or a SRAM RED AXS setup. Both options deliver top-tier 12-speed shifting and hydraulic disc braking, representing the flagship tiers of their respective component manufacturers.
Beyond the groupsets, the two models share an identical finishing package tailored for immediate race readiness. Both roll on Zipp 808 Firecrest carbon wheels, featuring an 80-millimeter rim depth and a hookless profile optimized for the included 28c Schwalbe One tires. The builds also share the proprietary Ventum carbon seatpost and aerobar system, topped with a Fizik Aeris saddle. Because the pricing and wheelsets are identical, the choice between the two models comes down entirely to a rider's preference for Shimano's Di2 shifting logic and hood shape versus SRAM's fully wireless AXS ecosystem.
Disc Dura-Ace
$9,690
Disc RED AXS
$9,690
Reviewers consistently highlight the Ventum One for its exceptional composure in crosswinds, a direct result of the missing down tube reducing the frame's surface area at the front. Ryan Heisler called it the "most stable handling triathlon bike I have ever ridden" (Slowtwitch), noting that the bike remained entirely "unbothered" (Slowtwitch) even when passed by heavy highway traffic. This steady character allows riders to stay relaxed in the aero position longer, saving crucial energy for the run.
However, the substantial frame mass and unique carbon layup create distinct trade-offs. The bike is frequently described as sluggish during out-of-the-saddle accelerations or steep climbs, rewarding seated, metered power rather than punchy efforts. Chris Foster observed that the non-double-diamond architecture also produces a "funny 'bouncing' feel" (Triathlete) over large road imperfections, which requires a brief adjustment period for riders accustomed to traditional frames.
Ultimately, testers agree the bike is a specialized tool that excels at "plugging into the aerobars and simply grinding away" (Triathlete). It trades the lively, reactive feel of a standard road frame for a dampened, ultra-steady ride that prioritizes fatigue management over long, flat-to-rolling miles.
