How to Remove a Mountain Bike Cassette: A Complete Guide
To take off a mountain bike cassette, first, remove the rear wheel from the bike. Next, insert the cassette removal tool into the cassette lockring and turn it counterclockwise to loosen it. Once it is loose, use a chain whip to hold the cassette in place while turning the removal tool to fully remove the lockring. Finally, slide off the cassette from the freehub body.