Shimano XT RD-M8100 12-speed Rear Derailleur

Shimano XT RD-M8100 12-speed Rear Derailleur

The Shimano XT RD-M8100 12-speed rear derailleur features an elegant yet aggressive angled design and an attractive anodised aluminium surface. 

High-quality 12-speed rear derailleur for precise and fast gear changes: XT RD-M8100 from Shimano

The use of a single or a double system requires the installation of the specific single or double rear derailleur (1x: RD-M8100-GS/SGS, 2x: RDs-M8120-SGS), whereby one version with medium-length (10-45T) or long cage (10-51T) is available for single systems.

The use of a single or a double system requires the installation of the specific single or double rear derailleur. The original mountain bike group continues its legacy of remaining the standard for mountain bikers everywhere. Nearly three decades in, the DEORE XT brand is defined by its trail-tested durability, reliability and performance. Recognizing that today’s mountain bikers are riding faster and confidently on more technical terrain, the legacy of DEORE XT is more important than ever. In 2019, our pinnacle mountain bike technologies will trickle down to SHIMANO DEORE XT M8100.

Features - Shimano XT RD-M8100 12-speed Rear Derailleur

• Shadow RD+ For optimal chain retention
• RD-M9100-GS
  
  • 45T max cog size
  • Works with 12-speed 10-45-teeth cassette
  • Better ground clearance (28mm shorter cage)
• RD-M8100-SGS 
  • 51T max cog size
  • Works with 12-speed 10-51 teeth cassette
• Pulley size with13T increased for reduced friction

Product features

• Use: MTB
• Group: XT M8100
• Model: RD-M8100
• Mount: Direct attachment (Conventional)
• Technology: Shadow RD+
• Gradations: 
  • GS-Type 1x12-speed (10-45 cassette)
  • SGS-Type 1x12-speed (10-51 cassette)
• Compatible chain: CN-M8100 12-speed
• Max. teeth large sprocket: 45T (GS) / 51T (SGS)
• Min. teeth large sprocket: 45T (GS) / 51T (SGS)
• Max. teeth small sprocket: 10T
• Min. teeth small sprocket: 10T
• Max. Front Difference: 0T
• Total Capacity: 34T (GS) / 41T (SGS)

Pulley cage (choose variant)

• Type-GS medium 
• Type-SGS long

Material

• Aluminum
• GFRP
• Stainless steel
• Steel

Weight (manufacturer information)

• Type-GS 286g
• Type-SGS 284g