3t Ultra Apex Eagle
In stock at 1 shop in New York City
Prices and stock checked Oct 22.
Where to buy
1 shopAbout this bike
The 3T Ultra Apex Eagle Bike is built on a premise that most gravel bikes don't follow: the tire dictates the frame, not the other way around. 3T's Realfast aerodynamics program begins by measuring how tires actually fit on a rim at pressure — not what the label says, but the real Width As Measured (WAM) and Radius As Measured (RAM) — and then engineers the frame's tube shapes around those real dimensions to redirect the turbulent airflow coming off the front wheel. The result is a gravel bike with genuinely aero carbon tube shapes that still accommodates tires most aero gravel bikes would never clear.
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The Ultra's aerodynamic case is built around a specific problem: a large gravel tire creates a wide, chaotic wake off the front wheel. There's no aerodynamic solution to the tire itself — the knobs are what they are. What 3T can control is what happens to that airflow after it passes the fork. The Ultra's downtube is 60mm wide, positioned close behind the front wheel and flaring to 75mm as it approaches the bottom bracket. This shape is designed to intercept the messy airflow off the tire, redirect it around the frame, and smooth the transition to the seat tube and rear triangle. The headtube uses an off-center aero profile to blend the fork crown into the downtube. None of this is visible from a catalog photo — it's the kind of aerodynamic detail that only makes sense once you understand what the problem was.
The frame is built from a unidirectional pre-preg carbon with a high-modulus/high-strength performance blend layup — 3T's approach to balancing stiffness at the bottom bracket and chainstays with the compliance needed in the seatstay and fork for mixed-surface riding. The fork is the 3T Fango RaceMax Integrale with a compact crown, which runs roughly 25mm shorter than a standard gravel fork — a design decision that tightens the steering geometry, reduces fork weight, and keeps the front end lower and more stable under hard cornering on loose surfaces. The…
