A UCI-legal tri bike with the lean, low race frame of a TT champion, tailored for triathletes. 


Optimal Balance - Optimal Balance is the design and fabrication philosophy behind all of Argon 18’s bikes. It is the subtle alchemy of lightness, rigidity, comfort and aerodynamics.
The result: a high-performance bike that is easy to ride, that handles well when climbing and is quick off the mark. What’s more, it provides the rider with a feeling of satisfaction without any unwanted fatigue. Much more than a simple idea, Optimal Balance is the result of over 25 years of research and development—expertise which reinforces Argon 18’s reputation as a world leader in high-end bikes and technology.

Integration - The cycling industry is highly competitive and rapidly growing. In this market full of innovation and integration, Argon 18 is leading the way with technological solutions that are ever more effective. Their solutions are tailored to the specific needs of cyclists—both men and women—at all levels of competition. Moreover, our constantly evolving innovations are easy to both implement and use.

ONEness Concept - With its streamlined handlebar and totally integrated virtual stem, Argon 18’s ONEness 3.0 cockpit has a significant impact on the aerodynamic efficiency of the E-118 Next. Weighing only 250 grams and featuring multiple settings, this system enhances our triathlon and time-trial bike’s versatility—making it one of the most integrated bikes on the market. Maximising aerodynamics so that you can give your best, while being truly comfortable.

Aerodynamics - In high-performance cycling, every second counts and aerodynamics can change everything. That’s why any reduction in drag—not matter how small—is of utmost importance. By testing their bikes in true wind conditions, they ensure that all their products are infinitely more accurate and competitive.

AFS - Argon Fit System - Argon 18’s expertise in geometry is based on Gervais Rioux’s vast experience as a professional cyclist and a bike shop owner as well as extensive research and development. The Argon Fit System (AFS) is designed to provide riders of all physical dimensions with consistent performance and optimal ergonomics. No matter what your morphology or your racing style, your positioning will always be efficient and comfortable, ensuring the ultimate in handling.

Positioning and Geometry - At Argon 18, they design their bikes by breaking the frame down into eight distinct sections, each with a specific role. As the length of the frame increases so does the length of each section. This preserves the bike’s well-balanced proportions and ensures that all their frames, regardless of size, have ideal ergonomics and flawless handling.

HDS - Horizontal Dual System - With its Horizontal Dual System (HDS), Argon 18 has succeeded in combining rigidity and comfort, qualities that are typically seen as mutually exclusive. The basic idea is simple: their frame tubes are each designed for a specific purpose.


Aggressive Fit and Positioning - New geometry provides a significantly lower, more aerodynamic front profile.

Updated Oneness System - Their updated ONEness system offers a bar/stem system with armrest stack 2cm lower and grip position 4cm lower than the E-118Next. This allows athletes to achieve an aggressive position, and for smaller riders to find their perfect fit.

Designed For Highly Technical Courses - Superb handling with the confidence of disc brakes. TT-level stiffness provides increased power transfer, and confident climbing and cornering comes through the lower position available on the base bar, with a 1.5cm increase in the saddle to handlebar drop over the E-118Next.

Lightweight - At 1200g (frameset, medium), the E-118 Tri+ is among the lightest tri bikes on the market.

UCI - Legal - Working within the UCI limits on tube size pushed us to shave all unneeded bulk off the frame, for a lean, lightweight racer that leaves you fresh for the run.


Frame Argon 18 E-118 Tri+
Headset FSA RS054
Seatpost Argon 18 ASP-7050 Aero
Stem Argon 18 ONEness 3.0
Fork Argon 18 E-118 Tri+
Handlebar Argon 18 ONEness 3.0


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