# Shimano XT RD-M8100-GS Rear Derailleur - 12-Speed Medium Cage Black

Deore XT RD-M8100 Rear Derailleur-   Offers fast and shockless shifting thanks to HYPERGLIDE+ technology
-   The low-profile design includes a bumper added to the derailleur pulley cage
-   Shimano Shadow RD+ technology reduces chain slap and creates a quieter drivetrain
-   Includes large 13t pulley
-   Drivetrain is silent in all gear positions with decreased rear derailleur and chain tension in low gear
    
    Rear Derailleur Mount Type
    
    10x1 Standard
    
    Rear Der/Shifter Compatibility
    
    Shimano Mountain
    
    Color
    
    Black
    
    Cage Length
    
    Medium
    
    Drivetrain Speeds
    
    12
    
    Largest Cog
    
    45
    
    Drivetrain Compatibility
    
    12-Speed

## Details

- **Price:** 145.0 USD
- **Vendor:** Gio's Outdoors
- **Type:** Rear Derailleurs
- **Tags:** Gio's Outdoors, Shopify Collective

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 145.00 USD | In stock |

## Images

- Shimano XT RD-M8100-GS Rear Derailleur - 12-Speed Medium Cage Black

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> Source: [Smart supply deals](https://smartsupplydeals.com/products/shimano-xt-rd-m8100-gs-rear-derailleur-12-speed-medium-cage-black)
> Updated: 2026-07-22