Shimano Deore XT RD-M8100-GS 12-Speed MTB Rear Derailleur Black

Shimano Deore XT RD-M8100-GS 12-Speed MTB Rear Derailleur Black

Brand: Shimano

SKU: IRDM8100GS

$199.00 Full price

$199.00

Club price

$209.00 Full price

Club Price is automatic when shopping online.
Join Club 99 for $5 and unlock benefits for life! Learn more.

REQUEST A PRICE BEAT

Pick up Delivery

Your store:

No location set

No click & collect information available for this location.

Click & Collect:

In Store

Select a size to view stock availability at this store.

$9.90 Not available

Express delivery — fastest option $19.00

Select a size to view stock availability at this location.

Have a Question? Ask an expert on 1800 990 523

Product Details

Description

The Shimano Deore XT RD-M8100-GS 12-Speed MTB Rear Derailleur is built for trail riders who want reliable MTB shifting with a calmer, more silent feel. Its GS cage and optimised pulley design help manage the chain efficiently while supporting smooth rear suspension movement, so you can stay composed on fast descents and technical terrain. With compatibility for a 10-45T 1x12 setup and stable performance when conditions get messy, this shimano derailleur helps keep your drivetrain in the right gear—gear after gear.

Key Features

Cage for smooth rear suspension travel
Quiet drivetrain across all 12 gears
Bigger 13T pulley improves chain control
Fast precise shifting on rough trails
Works with 10 to 45T 12-speed cassettes

Specifications

Product Overview

Product

Shimano Deore XT RD-M8100-GS 12-Speed MTB Rear Derailleur Black

Brand

Shimano

SKU

IRDM8100GS

Frequently Asked Questions

What is the Shimano Deore XT RD-M8100-GS 12-Speed MTB Rear Derailleur used for?

The Shimano Deore XT RD-M8100-GS 12-Speed MTB Rear Derailleur is used to shift gears on a mountain bike, helping you move across a 1x12-speed cassette range with stable, precise chain control on the trail.

Why choose the Shimano Deore XT RD-M8100-GS 12-Speed MTB Rear Derailleur?

Choose the Shimano Deore XT RD-M8100-GS 12-Speed MTB Rear Derailleur for quieter, more efficient shifting, improved chain management with its larger pulley design, and reliable stability in rough terrain.

Who is the Shimano Deore XT RD-M8100-GS 12-Speed MTB Rear Derailleur designed for?

It’s designed for MTB riders who want dependable Shimano drivetrain performance on trail rides, especially those running a 1x12 setup and demanding smooth shifting through varied conditions.

Trail-ready 1x12-speed shifting

Keeps your gears locked in with confident, precise transitions. Ideal for tackling varied MTB terrain with a 10-45T cassette range.

Smoother rear suspension action

A short-cage GS design supports cleaner movement from your suspension. Less interference means better consistency when the trail gets rough.

Quieter drivetrain feel

Reduced tension and added bumper help deliver a more silent rear shifting experience. More comfort on long rides, fewer distractions from drivetrain noise.