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    Speed Tests

    Zwift Bike Upgrade Performance: New Charts + Public Test Data

    Eric Schlange
    By Eric Schlange
    March 25, 2025
    LAST UPDATED May 26, 2025
    96

    It’s been a busy couple of weeks here at Zwift Insider! We’ve been testing Zwift’s recent frame and wheel performance tweaks as well as the new Bike Upgrades functionality so we can present data and help everyone wrap their heads around what has changed.

    If you haven’t read up on these changes, but want to become an expert on all things Zwift performance, here is some further reading:

    All About Bike Upgrades >
    Frame and Wheelset Performance Change >

    Below you’ll find charts and data that can give you the most thorough, detailed view yet when it comes to understanding how all the frames, wheels, and upgrade options in Zwift interact. This includes a new publicly-available Google sheet with all of our test results, so you can crunch numbers in your own way. Good luck!

    Table of Contents

    • Test Methodology Notes
    • Public Test Data Now Available
    • Frame Performance Charts

    Test Methodology Notes

    The following results are from tests done using our standard parameters: a 75kg rider, 183cm tall, without drafting. Flat tests were done on Watopia’s Tempus Fugit since it’s Zwift’s flattest route, while Climbing tests were done on Alpe du Zwift since it’s a long, steady climb.

    While we present time data with tenths-of-a-second precision, it’s important to understand there is a 1-second margin of error in these results, so it’s probably not worth obsessing over fractional seconds.

    Public Test Data Now Available

    Several readers asked for access to our raw speed test results, so we’ve compiled those into a public, read-only Google sheet.

    Access this test data here >

    The data is presented differently than we’ve done in the past, but you should find it much more useful for a variety of purposes. The following test results are compiled in the sheet:

    • All frames in Zwift at both stage 0 (un-upgraded) and stage 5 (fully upgraded) status, at 300W and 150W
      • Flat test average speed and hour time gaps
      • Climb test average speed and hour time gaps
    • All wheels in Zwift at 300W and 150W with the Zwift Carbon frame
      • Flat test average speed and hour time gaps
      • Climb test average speed and hour time gaps
    • All wheels in Zwift at 300W with the Zwift TT frame
      • Flat test average speed and hour time gaps
      • Climb test average speed and hour time gaps

    Frame Performance Charts

    This post originally contained a set of charts displaying frame performance, but we’ve since moved those charts to a dedicated page. See Zwift Speed Tests: Frame Ranking Charts.

    Questions or Comments?

    Hopefully these charts help you make decisions about which frames to use in which events, and which frames you want to upgrade first.

    Got questions or comments? Share below!

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      Eric Schlange
      Eric Schlangehttp://www.zwiftinsider.com
      Eric runs Zwift Insider in his spare time when he isn't on the bike or managing various business interests. He lives in Northern California with his beautiful wife, two kids and dog. Follow on Strava

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