Shimano

* Information provided in this AI Shopping Assistant may not match all information on the website. Please refer to the website to confirm details.

Shimano

Shimano XT RD-M8100 GS 12 Speed Rear Derailleur

(3)
Item #: RD001059
$145.00

Most orders ship free over $50*

Authorized Shimano Retailer

Insider - Exclusive Coupons and more.

Close

Double-check!

Confirm your options before continuing

Color: Black
MFG #: IRDM8100GS
Black
In Stock - Ready to Ship
More of these are on the way. Leave us your contact information and we'll let you know when they arrive.
There seems to be a problem with your name - Please Provide a name.
There seems to be a problem with your name - Please provide your first and last name.
There seems to be a problem with your phone number - please correct and submit again
There seems to be a problem with your email - please correct and submit again
There seems to be a problem with your email or phone number - Please provide your email or phone number.
Success! You're on our notification list. Thanks for your interest in this product.
Learn More
+ Add Accident Protection from
Remove Protection Plan

*Free Shipping over $50

90-Day Returns

Insider - Exclusive Coupons and more.

Price Protection

Shimano RD-M8100 XT GS 12 Speed Rear Derailleur

Shimano’s MTB workhorse

Shimano’s workhorse new Deore XT drivetrain is here and it’s delivering phenomenal 12-speed performance in the form of the M8100 XT rear derailleur. Starting off with the new pulley design, Shimano have implemented larger 13t pulleys for increased efficiency and chain management. They’ve also decreased tension in lower gear position while also implementing a pulley cage bumper to help quiet down the drivetrain system. The lightweight and short cage design helps to deliver superior rear suspension movement. The GS variant is a full 28mm shorter than the SGS variant, which pairs well with the short-cage design for a more protected derailleur setup. The M8100 XT rear derailleur offers terrific top tier 12-speed shifting performance that’s bound to shift perfectly for countless miles.

Features

  • ONLY COMPATIBLE WITH THE 10-45T CASSETTE
  • New 13t pulley design offers increased efficiency and chain management
  • Pulley cage bumper and decreased pulley tension helps to silence the drivetrain
  • Shadow+ tech maintains proper chain tension
  • 28mm shorter than the SGS variant to help keep the derailleur out of harm's way
  • Pulley cage: GS
  • Drivetrain speed: 12-speed
  • Min sprocket: 10t
  • Max sprocket: 45t

CALIFORNIA PROPOSITION 65 WARNING: This product can expose you to chemicals including (Cadmium, Phthalates, Bisphenol, Nickel (Metallic), di(2-ethylhexyl)phthalate "DEHP") Lead, which is known to the State of California to cause cancer and/or cause birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.

Q & A

Most items SHIP SAME DAY if ordered by 3pm PST and FREE SHIPPING on orders over $50.  Please note that oversize charges may still apply on some heavy or large items and free shipping does not apply to PO Boxes.

1-day free standard Shipping on most orders to California, 2-day free standard Shipping on most orders to Nevada, Arizona, & Utah.  Other states can expect delivery within 3 to 5 days.

Jenson USA ships worldwide, including APO/FPO addresses. For a more specific shipping quote and transit time estimate, simply add the items you are interested into your shopping cart and look for the "Shipping Options" box at the top of the cart page. You don't have to login or create an account to see shipping charges and time in transit estimates.

Bike Shipping: Most complete bikes ship for a $99 oversize shipping fee, unless otherwise noted. Free shipping thresholds do not apply to complete bikes.

Some manufacturers restrict where we can ship their products. If this item has shipping restrictions, they are listed below. If you'd like to buy an item that we cannot ship to your address, we can accept your foreign credit card and ship it to a US address for you.

 

Due to manufacturer restrictions, this product cannot be shipped to the following locations:
  • Aruba
  • Afghanistan
  • Angola
  • Anguilla
  • Albania
  • Andorra
  • Netherlands Antilles
  • United Arab Emirates
  • Argentina
  • Armenia
  • Antarctica
  • French Southern Territories
  • Antigua and Barbuda
  • Australia
  • Austria
  • Azerbaijan
  • Burundi
  • Belgium
  • Benin
  • Burkina Faso
  • Bangladesh
  • Bulgaria
  • Bahrain
  • Bahamas
  • Bosnia and Herzegovina
  • Belarus
  • Belize
  • Bermuda
  • Bolivia
  • Brazil
  • Barbados
  • Brunei Darussalam
  • Bhutan
  • Bouvet Island
  • Botswana
  • Central African Republic
  • Cocos (Keeling) Islands
  • Switzerland
  • Chile
  • China
  • Cote d'Ivoire
  • Cameroon
  • Congo, Democratic Republic of the
  • Congo, Republic of the
  • Cook Islands
  • Colombia
  • Comoros
  • Cabo Verde
  • Costa Rica
  • Cuba
  • Christmas Island
  • Cayman Islands
  • Cyprus
  • Czech Republic
  • Germany
  • Djibouti
  • Dominica
  • Denmark
  • Dominican Republic
  • Algeria
  • Ecuador
  • Egypt
  • Eritrea
  • Western Sahara
  • Spain
  • Estonia
  • Ethiopia
  • Finland
  • Fiji
  • Falkland Islands (Malvinas)
  • France
  • Faroe Islands
  • Micronesia, Federated States of
  • Gabon
  • United Kingdom
  • Georgia
  • Ghana
  • Gibraltar
  • Guinea
  • Guadeloupe
  • Gambia
  • Guinea-Bissau
  • Equatorial Guinea
  • Greece
  • Grenada
  • Greenland
  • Guatemala
  • French Guiana
  • Guam
  • Guyana
  • Hong Kong
  • Heard Island and Mcdonald Islands
  • Honduras
  • Croatia
  • Haiti
  • Hungary
  • Indonesia
  • India
  • British Indian Ocean Territory
  • Ireland
  • Iran, Islamic Republic of
  • Iraq
  • Iceland
  • Israel
  • Italy
  • Jamaica
  • Jordan
  • Japan
  • Kazakhstan
  • Kenya
  • Kyrgyzstan
  • Cambodia
  • Kiribati
  • Saint Kitts and Nevis
  • Korea, Republic of
  • Kuwait
  • Lao People's Democratic Republic
  • Lebanon
  • Liberia
  • Libya
  • Saint Lucia
  • Liechtenstein
  • Sri Lanka
  • Lesotho
  • Lithuania
  • Luxembourg
  • Latvia
  • Macao
  • Morocco
  • Monaco
  • Moldova, Republic of
  • Madagascar
  • Maldives
  • Mexico
  • Marshall Islands
  • Macedonia, Republic of
  • Mali
  • Malta
  • Myanmar
  • Montenegro
  • Mongolia
  • Northern Mariana Islands
  • Mozambique
  • Mauritania
  • Montserrat
  • Martinique
  • Mauritius
  • Malawi
  • Malaysia
  • Mayotte
  • Namibia
  • New Caledonia
  • Niger
  • Norfolk Island
  • Nigeria
  • Nicaragua
  • Niue
  • Netherlands
  • Norway
  • Nepal
  • Nauru
  • New Zealand
  • Oman
  • Pakistan
  • Panama
  • Pitcairn
  • Peru
  • Philippines
  • Palau
  • Papua New Guinea
  • Poland
  • Portugal
  • Paraguay
  • Palestine, State of
  • French Polynesia
  • Qatar
  • Reunion
  • Romania
  • Rwanda
  • Saudi Arabia
  • Serbia
  • Sudan
  • Senegal
  • Singapore
  • South Georgia and the South Sandwich Islands
  • Saint Helena, Ascension and Tristan da Cunha
  • Svalbard and Jan Mayen
  • Solomon Islands
  • Sierra Leone
  • El Salvador
  • San Marino
  • Somalia
  • Saint Pierre and Miquelon
  • Sao Tome and Principe
  • Suriname
  • Slovakia
  • Slovenia
  • Sweden
  • Swaziland
  • Seychelles
  • Syrian Arab Republic
  • Turks and Caicos Islands
  • Chad
  • Togo
  • Thailand
  • Tajikistan
  • Tokelau
  • Turkmenistan
  • Timor-Leste
  • Tonga
  • Trinidad and Tobago
  • Tunisia
  • Turkey
  • Tuvalu
  • Taiwan
  • Tanzania, United Republic of
  • Uganda
  • Ukraine
  • Uruguay
  • Uzbekistan
  • Holy See (Vatican City State)
  • Saint Vincent and the Grenadines
  • Venezuela
  • Virgin Islands, British
  • Viet Nam
  • Vanuatu
  • Wallis and Futuna
  • Samoa
  • Yemen
  • South Africa
  • Zambia
  • Zimbabwe
Trustpilot
Related Products
Shimano CUES SL-U6000 Linkglide 11 Speed Shifter
Shimano CUES SL-U6000 Linkglide 11 Speed Shifter
Shimano CUES SL-U6000 Linkglide 11-Speed Shifter Easy Shifting ...
Quickview
Shimano CUES SL-U6000 Linkglide 11 Speed Shifter
Shimano CUES SL-U6000 Linkglide 11 Speed Shifter
Description:
Shimano CUES SL-U6000 Linkglide 11-Speed Shifter Easy Shifting Shimano CUES was created to provide versatility for a wide range of bike styles. It features incredibly smooth and stress-free shifting, the robustness to withstand the demands of e-biking, and a durable ...
View Product
[ x ] close
Shimano XTR RD-M9250 SGS Rear Derailleur for 51T
Shimano XTR RD-M9250 SGS Rear Derailleur for 51T
Shimano XTR RD-M9250 GS Rear Derailleur for 51TThe ...
Quickview
Shimano XTR RD-M9250 SGS Rear Derailleur for 51T
Shimano XTR RD-M9250 SGS Rear Derailleur for 51T
Description:
Shimano XTR RD-M9250 GS Rear Derailleur for 51TThe wireless future has arrived Shimano’s new XTR M9250 brings fully wireless shifting to the riders in the form of the highly acclaimed XTR series. Built for riders running the 9-45t cassette, this ...
View Product
[ x ] close
Shimano GRX 12 Speed Rear Deraileur RD-RX825
Shimano GRX 12 Speed Rear Deraileur RD-RX825
Shimano GRX RD-RX825 12-Speed Rear Deraileur The Gravel ...
Quickview
Shimano GRX 12 Speed Rear Deraileur RD-RX825
Shimano GRX 12 Speed Rear Deraileur RD-RX825
Description:
Shimano GRX RD-RX825 12-Speed Rear Deraileur The Gravel Game-Changer The long-awaited Shimano GRX 12-speed Di2 series has officially arrived; introducing the newest generation of the world’s first gravel-specific groupset. This GRX RX825 Rear Derailleur brings top-level 12-speed Shimano Di2 tech ...
View Product
[ x ] close
ADD TO CART