Shimano Rear Derailleur Inner Plate - RD-M8000 - GS

The Shimano RD-M8000 inner plate is a high-quality replacement part designed specifically for GS t...

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AmazonSHIMANO Inner Plate XT-RD-M8000 bicycle component Black Size 55
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eBayShimano Spares RD-M8000 inner plate, GS type
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£18.48
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Product Information

Full details

The Shimano RD-M8000 Inner Plate is designed for mountain bike enthusiasts and mechanics looking to maintain or repair their 11-speed Deore XT GS (medium cage) rear derailleurs. This genuine replacement part restores precise chain alignment and crisp shifting performance, though it is specifically precision-engineered for the RD-M8000 GS model and is not compatible with SGS (long cage) versions or other derailleur series.

All features

Model Part NumberRD-M8000
BrandShimano Spares

Extended Product Information

FAQs

Will this fit an M8000 SGS (long cage) derailleur?

No, this specific part is designed exclusively for the GS (medium cage) model.

Do I need special tools to install this?

You will need standard hex wrenches and a chain tool to break the chain for easier access.

Is this an original Shimano part?

Yes, this is an authentic Shimano spare part.

Can I use this on an M7000 or M9000 derailleur?

No, this part is specific to the RD-M8000 series geometry.

How do I know if my derailleur is GS or SGS?

The cage length type is typically printed directly on the derailleur body or the inner cage plate.

Troubleshooting

Poor shifting after installation

Check that the cage is not pinched and that the derailleur hanger is straight.

Chain rubbing against the cage

Verify the inner plate is seated correctly and the cage screws are torqued to manufacturer specifications.

Pros and Cons

Pros

  • Exact fit for RD-M8000 GS models
  • Restores factory shifting performance
  • High-quality, durable manufacturing
  • Cost-effective alternative to replacing the full derailleur

Cons

  • Not compatible with SGS (long cage) variants
  • Requires derailleur disassembly for installation
  • Specific to the M8000 series line

Setup, Compatibility & Care

Installation requires basic bike maintenance tools, including hex keys and a chain tool to remove the chain before derailleur disassembly. Ensure you verify that your derailleur is marked 'GS' before purchase to avoid compatibility errors. To maintain the plate, regularly inspect the cage for debris or signs of bending after rides in rocky terrain. Keep the pivot points of the cage clean and lightly lubricated with bicycle-specific chain lube or grease to ensure smooth movement.

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