Shimano XT RD-M8000 11-speed Shadow Plus Rear Derailleur

  • Shimano XT RD-M8000 11-speed Shadow Plus Rear Derailleur - Components - Shimano - - - - Speedlab
  • Shimano XT RD-M8000 11-speed Shadow Plus Rear Derailleur - Components - Shimano - - - - Speedlab


Shimano XT RD-M8000 11-speed Shadow Plus Rear Derailleur


Price incl. VAT excl. Local Import Taxes & Shipping Costs.

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The XT rear derailleur RD-M8000 by Shimano - easier to use
The Shimano XT RD-M8000 rear derailleur features a Shadow Plus mechanism that allows you to switch between maximum chain stability and minimum operating forces. The extremely low profile and shallow angle of attack are also beneficial for safety on difficult, narrow trails. In addition, the RD-M8000 is better at handling a slanted chain than its predecessors and has larger derailleur pulley teeth for even smoother shifting performance. In the Dyna-Sys11 system, it thus performs its service efficiently and consistently. Both cages of the rear derailleur are made of lightweight aluminium. In the shorter version (GS) it is compatible with 1x11 and 2x11 systems and cassettes up to 46 and 42 teeth respectively. In the long version (SGS) it can also be used for 3x11 drivetrains with an 11-40 cassette.

Series: Deore XT M8000
Application: Cross Country, All Mountain
Gearing: 11-speed
Mount: standard (Direct Mount compatible)
Capacity: 39 tooth (short), 47 tooth (long)
Compatibility: Shimano MTB 11-speed
Compatibility - Chains: HG-X11

Technical Information:
Derailleur Pulleys: 11 tooth
Outer Cage Material: aluminium
Inner Cage Material: aluminium
Other Materials: stainless steel, aluminium, composite (GFRP), steel

- " Rider tuned" for precise, smooth shifting
- easy shifting with 20 % less effort
- Shadow design with optimised angle of attack
- improved chain stability
- efficient shifting and frictionless drivetrain
- efficient construction of the derailleur pulley teeth
- painted cage plates
- 4 joint bushings, fluorine-coated
- derailleur pulley bearings sealed

The real advantage of 11-speed is the ability to have all the range you require without sacrificing the rhythm you need. Dyna-Sys11 maximizes rhythm while driving and climbing with " Rhythm Step" gears in the most frequently used range. Driving efficiency is a key drivetrain performance indicator. Dyna-Sys11 means more speed for the same effort.

Shadow RD+
Less distraction, quiet drivetrain. Rear derailleur stabilizer, reduces chain slap. Simple solution for chain drop. Lighter and more efficient than roller type chain device.

- Cage Length: GS
- Largest Sprocket Teeth (max.): 42 tooth with 2x11-speed, 46 tooth with 1x11-speed
- Largest Sprocket Teeth (min.): 40 teeth
- Smallest Sprocket Teeth (max.): 11 teeth
- Smallest Sprocket Teeth (min.): 11 teeth
- Chainring Difference (max.): 10 teeth
- Total Capacity: 39 teeth
- Manufacturer Part Number: I-RDM8000GS

- Cage Length: SGS
- Largest Sprocket Teeth (max.): 40 tooth w/ 3x11-speed, 42 tooth w/ 2x11-speed, 46 tooth w/ 1x11-speed
- Largest Sprocket Teeth (min.): 40 teeth
- Smallest Sprocket Teeth (max.): 11 teeth
- Smallest Sprocket Teeth (min.): 11 teeth
- Chainring Difference (max.): 18 teeth
- Total Capacity: 47 teeth
- Manufacturer Part Number: I-RDM8000SGS

- 1 x Shimano XT RD-M8000 Shadow+ rear derailleur


What are the max low and min top sprocket for the Shimano XT 11 speed rear derailleur?
The Shimano XT 11 speed rear derailleur has a max low sprocket of 46T and a min top sprocket of 11T.

What chain is compatible with the Shimano XT 11 speed rear derailleur?
The Shimano XT 1 speed rear derailleur is compatible with chain HG-X 11 speed.

Do I have to use a Shimano XT 11 speed cassette and chain with the Shimano XT 11 speed rear derailleur?
No, the Shimano XT 11 speed rear derailleur is compatible with other Shimano 11 speed cassettes and chains. 

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SPEEDLAB ships from Monday to Friday with the exception of public holidays. We ship complete orders only, i.e. the dispatch usually takes place as soon as all ordered items are ready for dispatch. Please contact the SPEEDLAB service team if you wish a partial delivery.


Depending on destination country, package size, volume and weight, SPEEDLAB ships with the carriers German Post, DHL, German parcel service, DPD, USP. Deliveries of bulky goods, for example complete bicycles, will be handled by selected forwarding companies.

For return shipments SPEEDLAB cooperates with German Post, DHL and DPD. Large bulky goods like bicycles will be picked up by a forwarding company.

In Germany and most European countries the are shipped with DHL, Hermes, DPD, UPS, German Post.




  • Germany 5,99 Euro DHL / DPD / Hermes / German post
  • Rest of Europe: 13,99 Euro (DHL, DPD, Hermes)
  • Rest of world: 29,99 Euro DHL
  • Cash on Delivery + 4,9 €


For all items marked with this symbol, which are ordered on business days from Monday to Friday by 3 p.m. (CET), we offer the DHL Express shipping option or UPS for selected delivery countries. The DHL Express&UPS option is subject to an additional surcharge. It can be selected during the ordering process, provided that all items in the shopping cart offer the Express option. In addition the DHL Express option must be available for the selected delivery adress.

An order within the EU usually arrives the following business day. Depending on the postal code of the delivery address, longer parcel delivery times may occur.


  • Germany 15 Euro (DHL, UPS, TNT)
  • Rest of Europe – 49 EURO (DHL, UPS, TNT )
  • Rest of world – on request

In-stock items will be shipped within Germany in 1-2 working days, within Europe and worldwide in 1-3 working days. Unfortunately the delivery at a certain date given by you is not possible due to logistic reasons.

Should the ordered item not be in stock, the delivery time is extended analogue to the delivery in our warehouse. Information regarding the availability can be obtained at +49-7022-9-777-818 or

Please note: The ordered goods may be subject to a partial delivery.

Import Taxes, Customs Duties and Fees / National VAT

The indicated prices including VAT. In addition to the calculated SPEEDLAB shipping costs customers not living in the EU have to pay the national VAT and duty in their country for the imported goods.

Transport Damage

If you receive a damaged shipment please refuse the receipt if possible. Anyway, please get in touch with the Bike24 service team by e-mail or phone as soon as possible. We will be happy to solve the issue.


The SPEEDLAB team will do its best to fulfill your change requests.

The wish to cancel must be declared within 14 days after receipt of the goods. The return must take place within 14 days after the declaration of the cancellation.

Before the actual dispatch of your order, it can still be canceled. Please send us your request as soon as possible using the contact form or call us by phone. Should the payment have been charged already, it will be refunded in a timely manner.

Pack everything you want to return to SPEEDLAB carefully and include your order number. Remove the old shipping label and attach the return label to the package. You can return the package at DHL and Hermes stations. For all other countries: Please contact us with your return request and our customer service will arrange the process. Usually, SPEEDLAB covers the return costs.

A return will be processed at SPEEDLAB within a few working days. Once your request has been successfully processed it will be confirmed by e-mail. A possibly necessary refund will be processed directly afterwards.

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