Two Shimano bicycle rear derailleurs displayed side by side: the RD-M8100-SGS on the left and the RD-M8200-SGS on the right. Both are featured in a sleek black design against a plain background, showcasing their distinct shapes and features.
Shimano updates XT mechanical drivetrain with a wedge-shaped derailleur design, revised shifter ergonomics, and refreshed pedal platforms. Along with the changes, weights and prices have generally increased across the lineup.

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