Last Updated: November 23, 2023 A bike cassette is the cluster of sprockets on the rear wheel — modern road cassettes have 11-12 cogs (typical range 11-30 or 11-34 teeth); MTB cassettes have 11-12 cogs with much wider range (10-50 or 10-52t). Bigger biggest-cog = easier climbing; smaller smallest-cog = higher top-end speed. Below, we … Continue reading The Bike Cassette: All You Need To Know