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What Gear Ratio Should My Fixed-Gear Bike Have?

Question: I’ve set up fixed-gear bike with a 48-tooth chainring and 16-tooth cog. This gear seems too big. What ratio would you recommend, and what cadence should I maintain? — Larry M.

Coach Fred Matheny Replies: There isn’t an exact recommendation.

The best ratio depends on your terrain, fitness and goals. But in general, start with a 42×18 or 17 (63 or 67 gear inches) and see how it goes.

A 48×16 (81 inches) is almost certainly too big and may overstress your knees on climbs.

Likewise, it’s wrong to recommend a specific cadence for fixed-gear riding.

The whole idea of having only one gear is to force you into pedaling in a wide range of cadences. You have to pedal slowly and powerfully on climbs, then fast and fluidly on downhills.

Of course, you shouldn’t ride a fixed-gear bike on severely hilly terrain, but rolling roads are great for expanding your pedaling range.

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Comments

  1. Mich says

    May 7, 2021 at 10:04 pm

    Hi there,I have a 53/17 gear ratio fixie that I converted an old Bottechia. I do ok but I may bring the large cog down too a 48

    Reply

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