Ever seen a massive chainring? We’ve gone above and beyond by finding the largest chainring available on the internet—a whopping 75 teeth! After admiring it, we put it to the test. Can it even fit on our bike? How fast can we go on our local climb with this monster gear? And, more importantly, can we actually pedal it?
Stay tuned to see if these oversized chainrings are practical, or just a novelty!

00:00 Can we ride up a climb using the biggest chainring we could find?
00:44 Will it fit?
06:52 First impressions on the road
08:18 How important gearing is
08:54 How far can Ollie get up this crazy climb?
11:04 Descending Back
13:32 Takeaways: Do large chainrings like this need to exist? Should anyone consider buying one?

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Would you try riding with a 75-tooth chainring? Or is it just too extreme?

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27 Comments

  1. Would this be a better application for a recumbent pair with an electric motor to help get up to speed? I've been looking at the possibility of building something that could sustain 35-45mph with a little less effort put into pedaling

  2. I went to Core bike show (that was a few years ago now!) and one stand had a 1913 track bike. That was rocking a 100t chainring. 100 teeth.
    Course it had a 32t track sprocket on the back, so it probably wasn't that bad to ride….

  3. I had a 75 on my Brompton which was originally for a recumbent bike. I did race with a 70t in the world Brompton Championships. And on a visit to Royce Engineering Cliff had a 144t chainring.

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