Remove the rear wheelDave Caudery / Immediate Media
Remove the rear wheel by shifting the chain into the smallest sprocket and releasing the quick-release skewer, allowing the wheel to drop out. You’ll need a chain whip or chain whip pliers and a lockring tool.
2. Whip into shape
You’ll need a chain whip for this stepDave Caudery / Immediate Media
With the chain whip hold the cassette in place by wrapping the chain around the sprockets of one of the larger cogs. Fit the lockring tool into the lockring and loosen it by turning the tool anti-clockwise.
A ziptie can be useful here to keep things togetherDave Caudery / Immediate Media
Remove the lockring and then pull the old cassette towards you to remove it from the freewheel. If you want to keep the old one, it’s a good idea to zip tie it all together in order.
4. New cassette on
Line up the new cassette in orderDave Caudery / Immediate Media
Slide the new cassette on, in order, making sure you line up all the splines. There will be one wider gap on the rear of each cog, which you need to line up with the double or wider spline on the freewheel.
5. Place holder
Tighten the lockringDave Caudery / Immediate Media
Now take the lockring and fit it to the front of the cassette. Screw it gently into place by hand. Tighten the lockring sufficiently to hold the cassette in place.
6. Locked in
Be careful not to overtightenDave Caudery / Immediate Media
You don’t need the chain whip for this as you’ll be tightening in a clockwise direction and the freewheel will provide resistance. Don’t overtighten as you’ll want to take it off again some day!