EZ Gains Comes Out On Top at KONA 

The 2025 IRONMAN World Championships in Kona, Hawaii, once again proved why EZ Gains has become the most trusted name in triathlon aerodynamics.

From the front of the pro field to the podium, our EZ Hydro-Gains system was everywhere!

Jana Uderstadt pushing aero limits with EZ Hydro-Gains at Kona 2025.

The Results Speak for Themselves

Out of 58 pro athletes on the start line, 22 were using EZ Hydro-Gains, making it the single most-used piece of aero equipment in the women’s pro field.

From Lucy Charles to Taylor Knibb and the eventual race winner Solveig Løvseth, the top women in the sport are choosing Hydro-Gains for one reason.

The fastest bike split of the day came from Solvieg running the EZ Hydro-Gains system.

It’s the fastest, most stable and most reliable rear hydration system ever built.

Aerodynamic perfection in action — Kona’s best riders trust Hydro-Gains.

Fastest Bike Split? Hydro-Gains Again!

Tested relentlessly in the Silverstone Sports Engineering Hub Wind Tunnel and refined alongside professional athletes, Hydro-Gains has consistently proven to save real time on flat, hilly and technical courses alike.

Why the Pros Trust It

Every EZ Hydro-Gains system is custom fitted to each saddle, ensuring precise alignment and aerodynamic efficiency.

Combined with proven drag reductions verified through wind tunnel testing, it’s no surprise so many pros and age-groupers are switching to Hydro-Gains.

It’s not just the fastest rear hydration system; it’s a competitive edge.

EZ Hydro-Gains remains the leading choice in aerodynamic rear hydration systems; proven and patented.

EZ Hydro-Gains continues to dominate triathlon aerodynamics, becoming the go-to choice for athletes looking to optimise their Ironman Kona bike setup and triathlon rear hydration system.

With proven aero performance and extensive wind tunnel testing, it remains the fastest, most reliable option for both professionals and age-group competitors seeking aerodynamic efficiency and watt savings in long-distance triathlon racing.