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The Shimano Outer Cage Plate GS is a genuine replacement part designed specifically for Shimano rear derailleurs that use a medium cage (GS) configuration. As the outer half of the derailleur cage, this plate plays a crucial role in guiding the chain smoothly across the cassette, helping to maintain crisp, reliable shifting under load. Using an original Shimano cage plate ensures precise fitment, correct chain line, and compatibility with the intended pulley wheels and hardware, which is essential for long-term drivetrain performance.
This outer cage plate is ideal for riders who want to restore the function of a damaged or bent derailleur cage without replacing the entire derailleur. Whether you ride on the road, gravel, or trails, a straight and properly aligned cage helps reduce chain noise, improve shifting accuracy, and extend the life of your chain and cassette. By choosing an authentic Shimano spare part, you can service your existing derailleur with confidence, keeping your bike running smoothly and preserving the feel and performance you are used to.
