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Shimano DEORE RD-M4120 10/11-speed Rear Derailleur

Product codeERDM4120SGS
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Shimano DEORE RD-M4120 10/11-speed Rear Derailleur

The Shimano DEORE RD-M4120 2×10/11-speed rear derailleur for 11-42 cassette features an elegant yet aggressive angled design and an attractive anodised aluminium surface.

Features – Shimano DEORE RD-M4120 2×10/11-speed Rear Derailleur

  • Shadow RD+ For optimal chain retention
  • RD-M4120-SGS  
    • 42T max cog size with 2×10-speed and 2×11-speed 11-42-teeth cassette

Product features

  • Use: MTB
  • Group: SLX M4100
  • Model: RD-M4120
  • Mount: Direct Mount
  • Technology: Shadow RD+
  • Gradations: SGS-Type 2×10-speed (11-42) / 2×11-speed (11-42)
  • Compatible chain: HG-X 10-speed / 11-speed
  • Max. teeth large sprocket: 42T
  • Min. teeth large sprocket: 42T
  • Max. teeth small sprocket: 11T
  • Min. teeth small sprocket: 11T
  • Max. Front Difference: 10T
  • Total Capacity: 41T

Pulley cage

  • Type-SGS long


  • Aluminum
  • GFRP
  • Stainless steel
  • Steel

Scope of delivery

  • 1 Shimano DEORE 10/11-speed RD-M4120 Rear Derailleur


Derailleur Mounting

Rear Derailleur Pulley Cage

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