How to Change Cassette on Mountain Bike: A Step-by-Step Guide
To change the cassette on a mountain bike, first, remove the rear wheel from the bike. Then, use a chain whip tool to hold the cassette in place while using a cassette lockring tool to remove the lockring. Once the lockring is off, slide the old cassette off the freehub body and replace it with a new one. Tighten the lockring back into place and reinstall the wheel onto the bike.