How To Choose Your Chainrings + Cassette - GCN's Guide To Selecting Road Bike Gear Ratios

Having the right gear ratios on your bike will make a huge difference to your riding experience. Here's a quick guide to how they work.
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Your gear ratios are defined by the size of your chainrings and the ratios offered by your cassette. Your tyre width also affects this to a certain extent, but by far the biggest influence us exerted by the chainrings and cassette.

On a road bike you have two choices of chainset. Standard, which is commonly 53x39 and compact, commonly 50x34. Cassettes generally offer gears in the range of 11-25 or 11-28.

In this video, Dan Lloyd explains how gear ratios are calculated and how you can use that knowledge to your benefit - don't forget to SHARE!

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