Other odd standards you may come across.

Using SRAM cassettes with Shimano drivetrains and vice versa.

What do I need for 8, 9 and 10-speed cassettes?.This guide deals with the most common mountain bike setups - road cycling cassette and freehub compatibility (and gravel as an extension of that) is a whole different kettle of fish, we're afraid. It's usually a system of splines that the cassette slides onto before being locked in place, but there are a number of standards that aren't compatible with each other, so it's vital to know what you've got and what you need. Where it gets tricky is how the cassette attached to the freehub body. It's a more modern development of the old freewheel, but instead of having the sprockets permanently attached to the freewheeling mechanism, they're a separate assembly of cogs stacked together, called a cassette. The freehub is an essential part of your bike - without it, you'd always have to be pedalling as long as you're moving. Your complete guide to SRAM MTB drivetrains, from AXS and XX1 Eagle to NX.

Who makes Micro Spline wheelsets and hubs for Shimano 12-speed groupsets?.

Your complete guide to Shimano MTB drivetrains, from Tourney to XTR 12-speed.

This guide will help you pick the right one, whether it's from SRAM or Shimano, the XD, HG or Micro Spline standard or for a 9, 10, 11 or 12-speed cassette. If you're looking to upgrade your mountain bike drivetrain, then knowing which freehub you have or need on your rear wheel is essential - and with a plethora of standards about it's not that easy to figure out.

Free instal Mountain Bike Xtreme