Shimano XT BR-M8120 Disc Brake Set w/ Resin Pads J-Kit - black/set (front+rear)

Shimano XT BR-M8120 Disc Brake Set w/ Resin Pads J-Kit

Item number: 71596

Shimano XT BR-M8120 disc brake set - more brake control = more concentration on the trail

Shimano XT BR-M8120 is a four-piston disc brake set with organic brake pads specially designed for Enduro and Trail applications. The brake callipers feature excellent brake control and a simple connection system. The I-Spec EV compatible BL-M8100 brake levers are mounted at an angle to provide an additional contact point. This increases stiffness and provides more direct feedback. In addition, Shimano Servo Wave increases braking power: more performance is available with shorter empty travel.

Guidelines for Replacing E-bike Components:

Before you replace components on your e-bike, please read through the guidelines for component replacement for CE-marked e-bikes/pedelecs with pedal assistance.


Deore XT M8100
Enduro, All Mountain
hydraulic, 4 pistons
mineral oil
Hose Length (Front/Rear):
1000 mm/1700 mm

Technical Information - Caliper:

Caliper Mount:
post mount
resin with cooling fins
Calliper Material:
Piston Material:
Hose Connection:

Technical Information - Lever:

Lever Length:
Adjustment Options:
reach adjust (no tools required), contact point
clamp (split), I-Spec EV
right (side-specific), left (side-specific)
Brake Lever Material:
Brake Lever Housing Material:
Hose Connection:


Mounting Position:
  • front brake caliper: brake lever left
  • rear brake caliper: brake lever right
Brake Rotor:
140 mm, 160 mm, 180 mm, 203 mm, 220 mm (recommended: RT-MT800)
organic and sintered; with narrow pad shape; standard and Ice Tech brake pads
EP8 EP801, EP8 EP800 for MTB / Touring


Brake Caliper:
  • excellent brake control helps you to focus on the trail
  • extremely powerful braking for more self-confidence and downhill control
  • less brake rotor noise and 10% more braking power than M8000
  • easy and quick installation
  • 4 ceramic pistons
  • approved for use with transport and cargo bikes
  • painted
  • steel bolts (5 mm)

Brake Lever:
  • optimised lever axis position with additional contact point and revised ergonomics
  • flexible, action-optimised cockpit layout thanks to I-Spec EV
  • rotation adjustment angle for compatible shift lever: 20°
  • 10% stiffer than M8000 even in heat
  • faster braking with less empty pull
  • funnel venting with M5 funnel
  • anodised lever, painted body
  • stainless steel clamp bolts


Servo Wave
Shimano Servo Wave technology optimises the travel of your brake levers. During the braking process, the brake pads are guided quickly to the brake rotor with very short lever travel. The greater part of the lever travel is reserved for the actual braking force. In this way, you can apply your braking power in a more targeted manner and use it more effectively.

I-Spec EV
I-Spec EV describes a variant of the connection between brake lever and shift lever on Shimano MTB derailleurs. This type of mounting allows the shifter to be adjusted both horizontally and vertically in relation to the brake lever, and ensures a tidy cockpit by reducing the number of clamps required. Compared to I-Spec and I-Spec II, I-Spec EV offers a much wider adjustment range. 14 mm adjustment range the longitudinal direction and up to 60° rotation allow an optimal ergonomic adjustment to your riding style, your sitting position and your anatomy.

One-Way Bleeding
One Way Bleeding is a technique used on Shimano calipers that facilitates brake bleeding. The hose routing has been optimised so that no air bubbles remain in the brake calliper. In combination with the funnel, the brake can be bled cleanly and easily.

J-Kit is a simple line connection system for hydraulic brakes from Shimano, so that you can install your brakes quickly and easily. The brake hose does not come connected to the brake to facilitate routing of the hose in the frame. The brake hose is already filled with oil in the J-Kit and sealed with a thin membrane. There is a small pin in the J-Kit brake lever that pierces this diaphragm during assembly to allow oil to flow.

Manufacturer Number:

I-M8120JLFXSA100 + I-M8120JRRXSA170


  • 2 x Shimano XT BR-M8120 + BL-M8100 disc brakes, front & rear
  • 1 x Shimano SM-BH90-SBM brake hose, 1000 mm (front)
  • 1 x Shimano SM-BH90-SBM brake hose, 1700 mm (rear)
  • 2 x pairs Shimano brake pads
  • 2 x insert
  • 4 x calliper bolts
  • 2 x olive (installed)
  • ready for installation, filled, bleeding is recommended after installation

Order Together:

  • 100 day return period
  • Online since 1998
  • Trusted Shop 4.85 / 5.00


  • black/set (front+rear), in stock

Customer Reviews (6)


Customer Reviews (6)


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by Sebastian W. on 25.09.2023
verified purchase
item: black/set (front+rear)

tut was sie soll

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by dominique l. on 28.02.2023
verified purchase
item: black/set (front+rear)

super produit

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by Juan Luis R. on 10.12.2022
verified purchase
item: black/set (front+rear)
0 of 2 customers found this review helpful.

Todavía no me ha llegado….

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by Mario R. on 28.12.2021
verified purchase
item: black/set (front+rear)

Alles super.

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by Thomas W. on 18.10.2020
4 of 5 customers found this review helpful.

Habe die Bremse als Ersatz für eine SRAM Code montiert. Alleine die Optik ist ein gewaltiger Unterschied. Die XT Bremse wirkt im Vergleich zur SRAM regelrecht klein und zierlich.
Montage und Entlüftung funktionierte einwandfrei. Die Bremsscheiben wurden nicht gewechselt, die SRAM Scheiben werden weiterverwendet. Vorne 200 mm hinten 180 mm
Das tut der Funktion jedoch keinerlei Abbruch. Nach dem Einbremsen lässt sich die Bremse jederzeit mit einem Finger gefühlvoll dosieren. Muss sie auch, auf dem Hebel ist für einen zweiten Finger gar kein Platz.
Die Bremskraft ist über jeden Zweifel erhaben und zu jeder Zeit mehr als ausreichend! …und vor allem im Vergleich zur SRAM Bremse hat diese Bremse einen klar definierten harten Druckpunkt, den man auch noch je nach persönlichen Vorlieben einstellen kann.
Die Bremse ist für mich optisch und funktionell ein klares Highlight.

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by Mark S. on 13.05.2020
2 of 3 customers found this review helpful.

Sehr gut gelungene Bremse für´s MTB / E-MTB
Ich Nutze die Bremse Überwiegend auf Trails und im Bikepark
Als Bremsscheibe nutze ich die XTR RT-MT900 203mm

-Gut Dosierbarer Druckpunkt,
-Hohe Bremleistung bei wenig Hebelkraft,
-Haptischer 2-Finger Helbel aus Alu
-Kaum Fadinggefahr auf langen Abfahrten dank ICE-TECH
-Schöne Optik der 4-Kolben Bremse
-Keine Lästigen geräusche wie bei der Magura MT7
-Sehr Gutes Preis Leistungs Verhältnis

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