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The Shimano Outer Plate Assembly SGS-Type is a genuine replacement part designed specifically for Shimano rear derailleurs that use a long-cage (SGS) configuration. As the outer plate of the derailleur cage, this component plays a key role in guiding the chain smoothly across the cassette, helping to maintain crisp, reliable shifting under load. Using an original Shimano plate assembly ensures precise fitment, consistent performance, and compatibility with the intended derailleur model, avoiding the issues that can arise with non-standard or improvised parts.
This outer plate assembly is ideal for riders who want to restore the performance of a worn or damaged derailleur cage without replacing the entire derailleur. It is particularly useful for bikes running wide-range cassettes, where the longer SGS cage is needed to manage extra chain wrap and maintain tension. Whether you are maintaining a mountain, trekking, or hybrid drivetrain, this Shimano replacement part helps extend the life of your existing components, supports smooth and quiet operation, and keeps your shifting system working as the manufacturer intended.
