Unlock Your Potential

With a 4iiii Power Meter

Why Train With Power

Athlete Reviews

  • Hannah Otto

    With climbs lasting between 20 minutes to over an hour, my 4iiii power meter was an essential tool for pacing the 7+ hour day. I love the art of modulating my own effort while competing and pushing into new realms of possibility.

    US XCM National Champion
  • Gwen Jorgensen

    The process to get these power meters installed was very easy, I just mailed in my current cranks and they installed the power meter, and mailed it back. My 4iiii has been extremely easy to use and accurate. The dual-sided power allows me to make sure I’m sitting even and pushing equal watts. Power is an essential way to measure my progress over time and have a metric to build off of.

    Triathlon Olympic Champion and 2x World Champion
  • Cameron Jones

    After identifying some power imbalances with my dual-sided pm last year, and addressing it in the gym, the stat I was most proud of was the near-perfect LR balance I achieved (49.9%/50.1%)

    2025 Unbound Gravel & Life Time Grand Prix Overall Winner
  • Alex Dowsett

    I’ve always believed that data is only valuable if you know what to do with it. 4iiii power meters are trusted, accurate and built on an incredible heritage – and I’m excited to work with the team to help more riders get set up properly, understand the numbers, and use power to train with real purpose.

    Former Hour Record Holder and WorldTour Pro turned Performance Analyst

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