How to Easily Replace the Rear Cassette on Your Mountain Bike: A Step-by-Step Guide
To replace the rear cassette on a mountain bike, first, remove the rear wheel from the bike. Then, use a cassette removal tool to unscrew the lockring of the cassette. Next, slide the old cassette off the freehub and slide the new one onto the freehub. Finally, screw the lockring back on and reattach the wheel to the bike.