Ventum Tempus Carbon Triathlon Bike Frameset

The Ventum Tempus Carbon Triathlon Bike Frameset is Ventum's current flagship platform for time trial and triathlon racing, sold as a frameset rather than a complete build. Full carbon fiber construction uses airfoil-shaped tubes running head tube to tail to manage airflow over rider and bike, with wide-set fork legs and seat stays that route turbulent air around the wheels. Ventum benchmarked the Tempus against its predecessor, the Ventum One Disc, and reports it tests up to 15 watts faster in certain conditions.

Because this is a frameset, you supply your own groupset, wheelset, and brake calipers — the kit includes the frame, fork, seatpost and post assembly, headset, UDH derailleur hanger, and a Profile Design Wing Ultimate S base bar with 52 ASC aerobar extensions. The frame combines a steep seat tube angle, placing the rider forward and on top of the pedals, with a stiffened front end for more precise cornering. Internal cable and brake routing, a T47 threaded bottom bracket, and flat mount disc brakes front and rear round out a frame built for riders assembling a race bike to their own spec.

Who It's For

•        Triathletes and TT racers building a race bike from the frame up who want to choose their own groupset, wheels, and brakes.

•        Racers who want a frame built for the aero position TT and triathlon events reward, not a multi-purpose road bike.

•        Riders working with a shop, or comfortable building it themselves, since drivetrain, brakes, and wheels aren't included.

•        Not the right fit for someone who wants a complete, ride-away bike out of the box.

What to Look For

•        Know what's in the box: frame, fork, seatpost, headset, UDH hanger, base bar, and extensions. Groupset, wheels, brake calipers/rotors, and a computer mount are separate.

•        Get fit before you buy. The steep seat tube angle is built for a specific aero posture, so size and stack should come from a TT/triathlon fit, not a road bike size.

•        Match components to the frame's standards: T47 bottom bracket, flat mount disc brakes only, and max tire clearance of 700x30c.

Key Features

The frame and fork share Ventum's tapered, airfoil-profiled construction, with a tapered carbon steerer and carbon dropouts on the fork and internal cable and brake routing throughout. Flat mount disc brakes are the only option, front and rear, and a UDH derailleur hanger keeps the frame compatible with current crank and derailleur options once you spec a groupset.

Tire clearance tops out at 700x30c, enough for riders who want extra cushion on rougher race courses without working against the frame's aero intent.

The Tempus is shaped around continuous airfoils from the head tube back, with wide-set fork legs and seat stays meant to clean up airflow around the wheels — refined through CFD analysis and wind tunnel testing, and benchmarked at up to 15 watts faster than the outgoing Ventum One Disc. The steep seat tube angle and stiffened front end target real-world handling — cornering and crosswind stability — alongside the aero numbers.

The cockpit pairs the Profile Design Wing Ultimate S base bar and 52 ASC extensions with a Profile Design A3A riser kit (30mm of stack) and a Ventum carbon seatpost with 0° offset. A computer mount is not included.

Rider Intent Summary

•        Biggest strengths: Aero-focused carbon construction backed by CFD and wind tunnel testing, plus handling built for corners and crosswinds, not just straight-line speed.

•        Tradeoffs: Frameset only — groupset, wheels, brakes, and a computer mount cost extra, and the build takes a shop or real mechanical skill.

•        What makes it different: Ventum's own testing puts it up to 15 watts faster than its predecessor, the Ventum One Disc, with the cockpit already specced — Wing Ultimate S base bar, 52 ASC extensions, and A3A risers.

Victory's Take

At Victory Bicycle Studio, we see the Tempus frameset as the right call for a triathlete or TT racer who already knows how they want their bike built. Bring it in for a professional fit before finalizing your position, and we'll help you spec the rest of the build around it.