Shimano XT CS-M8100 Sprocket

No, this specific unit is engineered exclusively for the Shimano XT CS-M8100 12-speed cassette. It will not fit other models like SLX or XTR, as the cog spacing and mounting interfaces are specific to the XT series.

The smallest cogs on a cassette typically wear out the fastest because they handle the most torque and chain tension. Replacing just these cogs is a cost-effective way to restore crisp shifting performance without discarding the entire cassette, provided the larger cogs are still in good condition.

Yes, you will need a standard cassette lockring tool and a chain whip to remove the existing lockring and cassette assembly. Once the cassette is off the freehub body, you can swap the worn cogs for the new ones.

Often, yes. If your chain is skipping specifically when in the 10T or 12T gears, it is usually a sign that the teeth have worn down and can no longer hold the chain links securely. Replacing these cogs should resolve the issue, assuming your chain itself isn't also worn beyond its service life.

It is highly recommended. A worn chain stretches over time and accelerates wear on new cassette teeth. Installing a fresh chain alongside these new cogs ensures everything meshes correctly and helps extend the lifespan of the entire drivetrain.