How to choose a bike cassette
Your cassette sets how easy your climbing gears are and how fast your top gear is. Here's what to check.
Speed count
Match the number of gears on your shifter and derailleur, from 7-speed up to 13-speed.
Freehub body
The cassette must fit your hub: Shimano HG, Micro Spline, SRAM XD, SRAM XDR or Campagnolo.
Gear range
Written as smallest to largest cog, like 11-34T. A bigger largest cog means easier climbing.
Derailleur capacity
Check the largest cog your rear derailleur supports before fitting a wider-range cassette.
Weight vs durability
Premium cassettes save weight with alloy or titanium. Steel cassettes cost less and wear well.
Chain wear
Replace your chain on time and one cassette can outlast two or three chains.
Also see freewheels & sprockets, cassette spares, cassette tools and chains.