2025 Argon18 E117 Disc 105 Triathlon Bike in Black Stealth

Race-Ready Optimisation
Introducing the new, redesigned E117 triathlon bike, developed for serious triathletes and TT competitors determined to shatter their personal bests. The E117 is a race-ready, fully-equipped and value-packed performance machine, delivering unmatched innovation drawn directly from our pro-level bikes.

Triathlon and TT Geometry
Tri and TT bikes are focused on aero performance, and the geometry reflects this. To allow the rider to achieve an aggressive aero position, the geometry is designed to put the rider in a more forward position.

Argon Fit System
Argon 18's fit system offers size-specific geometries to provide optimal performance and positioning for all sizes, guaranteeing no rider left behind.

3D System
Get the best fit window without compromising the safety, steerer stiffness, or looks of your bike with Argon 18's 3D Technology.

Triathlon and TT Geometry - Get aero
Tri and TT bikes prioritise aero performance, and the geometry of these bikes reflects this. To allow the rider to achieve an aggressive aero position, the seat tube angle is much steeper than on a traditional road bike. This geometry is designed to put the rider in a more forward position. Not only does this help with aerodynamics, it also can help save a triathlete's legs for the run, as it places less stress on the quadriceps. While a TT rider doesn't have to worry about running a marathon after the ride, the same aggressive aero positioning is required to shave precious seconds off the course. Argon 18's triathlon and TT geometry maximises performance while allowing riders to dial in their perfect fit to maintain that position throughout the race.