Shimano XT RD-M8100 Derailleur, Long Cage 1x12sp


Shimano XT RD-M8100 Derailleur


Common sizes typically in stock and ships within 24 hours of purchase.
Others may be special ordered, an ETA will be provided by our sales staff.

If you have questions on availability and timeline let us know!

SKU: UPC: 192790443645 Categories: , Tags: , , ,


Shimano XT RD-M8100 Derailleur

Designed for Shimano 12sp with HyperGlide +

This is a long cage derailleur capable of running the 10-51t cassette as well as the 10-45t option.

Questions? Chat, email or call and we will get you on the right product!

Ensure the best performance of your new drivetrain with proper chain lube procedures. Check out a post on how important the right lube is here!

Shimano XT RD-M8100 Derailleur Details

  • Rear Derailleur Mount Type: Shimano Rear Direct Mount , 10×1 Standard
  • Drivetrain Speeds: 12
  • Cage Length: Long
  • Chain Wrap Capacity (teeth): 41 teeth
  • Largest Cog: 51
  • Color: Black
  • Weight: 284 g
  • Rear Der/Shifter Compatibility: Shimano Mountain

XT RD-M8100 SGS Long Cage 12sp UPC: 192790443645


Questions? No problem. BikeCo’s staff is here to ensure you get the right product, at the right price for your particular riding needs.

Chat, call or email us for more details on products as well as product pairings. Everyone at is here to ensure you get the most out of each ride. We know how important it is to have the best working bits on your mountain bike because we all ride! – the best spec, setup, tune and pricing in MTB.

Additional information

Rear Derail Brand