Shimano
ByShimano

Deore XT M8100 Rear Derailleur (RD-M8100-SGS)

The all-new SHIMANO DEORE XT M8100 series of derailleurs brings a new level of drivetrain silence thank to decreased tension in the low gear position and an added bumper on the pulley cage. Larger 13T pulleys increase efficiency and chain management while compatibility with SHIMANO's new 12-speed cassettes boosts range.

$115MSRP
Buy from Shimano
Drivetrain · Rear Derailleurs
Image pending
SKU RD-M8100-SGS
TypeRear Derailleurs
Disciplinemountain
Speeds12
Weight287 gManufacturer claimed
01 / About

The Deore XT M8100 Rear Derailleur (RD-M8100-SGS).

Shimano's take on drivetrain.

The all-new SHIMANO DEORE XT M8100 series of derailleurs brings a new level of drivetrain silence thank to decreased tension in the low gear position and an added bumper on the pulley cage. Larger 13T pulleys increase efficiency and chain management while compatibility with SHIMANO's new 12-speed cassettes boosts range.

02 / Specifications

Deore XT M8100 Rear Derailleur (RD-M8100-SGS) spec sheet.

Everything Shimano publishes for the Deore XT M8100 Rear Derailleur (RD-M8100-SGS).

01Overview
5 fields
Type
Rear Derailleurs
Discipline
mountain
Brand
ShimanoExternal
SKU
RD-M8100-SGSShimano part number
Product URL
bike.shimano.com/en-NA/products/components/pdp.P-RD-M8100-SGS.htmlExternal
02Drivetrain
7 fields
Speeds
12
Actuation
mechanical
Subcategory
—
Power meter
—
Power meter type
—
Model line
Deore XT
Generation
M8100
03Pricing & availability
3 fields
Price
$115USD · MSRP
Availability
—
Weight
287 gManufacturer claimed
04Additional specs
8 fields
Cage Length
long
Max Cog
51
Min Cog
10
Total Capacity
41
Clutch
true
Pulley Teeth
13
Mount Type
direct mount
Compatibility
Shimano 12-speed MTB mechanical
03 / Reviews

From the cycling press.

4 reviews from 4 sources.

01bikebesties.comShimano XT Rear Derailleur Review: 2,500 Miles of Real TestingOct 202402cyclingindependent.comA Useful Review: Shimano Deore XT M8100 – The Cycling IndependentMar 202303Mountain Bike RiderShimano XT M8100 drivetrain review - MBRNov 202104mantel.comShimano XT M8100 12 Speed Rear Derailleur reviews - Mantel—