Assos CS.speedfire Chronosuit S7 review

Assos CS.speedfire Chronosuit S7 is the Swiss brand's time trial skinsuit

Cycling Weekly Verdict

The Assos CS.speedfire Chronosuit S7 is a very high-quality item. Our testing suggested there are faster skin suits available, but the Assos is the most comfortable. Something to factor in if you're going to be competing in longer events such as time trials over 50 miles. Although expensive, if looked at from a cost per watt saving, the Assos suit makes far more economical sense than a £5,000 top-end TT frame.

Reasons to buy
  • +

    Superb quality

  • +

    Built to last

  • +

    Comfortable (for a skinsuit)

  • +

Reasons to avoid
  • -

    The pattern beginning above the waist isn't very flattering

  • -

    Our testing suggests rival suits to be more aerodynamic

You can trust Cycling Weekly. Our team of experts put in hard miles testing cycling tech and will always share honest, unbiased advice to help you choose. Find out more about how we test.

A skinsuit is designed to be the most aerodynamic piece of clothing you can wear. Premium skinsuits such as the Assos CS.speedfire Chronosuit S7 feature special fabrics and strategically placed seams designed to reduce drag and manipulate airflow.

>>> Project 49 - how to ride a time trial pb (video)

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Oliver Bridgewood - no, Doctor Oliver Bridgewood - is a PhD Chemist who discovered a love of cycling. He enjoys racing time trials, hill climbs, road races and criteriums. During his time at Cycling Weekly, he worked predominantly within the tech team, also utilising his science background to produce insightful fitness articles, before moving to an entirely video-focused role heading up the Cycling Weekly YouTube channel, where his feature-length documentary 'Project 49' was his crowning glory.