Shimano XTR XC BR-M9100 Disc Brake Set J-Kit

Item number: 74936
XTR XC BR-M9100 Disc Brake Set J-Kit - grey/set (front+rear)
XTR XC BR-M9100 Disc Brake Set J-Kit - grey/set (front+rear)
XTR XC BR-M9100 Disc Brake Set J-Kit - grey/set (front+rear)
XTR XC BR-M9100 Disc Brake Set J-Kit - grey/set (front+rear)
XTR XC BR-M9100 Disc Brake Set J-Kit - grey/set (front+rear)
XTR XC BR-M9100 Disc Brake Set J-Kit - grey/set (front+rear)
XTR XC BR-M9100 Disc Brake Set J-Kit - grey/set (front+rear)
XTR XC BR-M9100 Disc Brake Set J-Kit - grey/set (front+rear)
XTR XC BR-M9100 Disc Brake Set J-Kit - grey/set (front+rear)
  • 100 day return period
  • Online since 1998
  • Trusted Shop 4.89 / 5.00

XTR BR-M9100 XC disc brake set by Shimano - more direct braking sensation

Shimano has equipped the XTR XC BR-M9100 disc brake set with the completely newly developed BL-M9100 brake levers. Its angled clamp is located more centrally than its predecessor, so that the reservoir is supported at the outer end by the handlebars. The result is increased rigidity, a more direct braking sensation and greater overall control. Weight-saving carbon and magnesium were used for Cross Country applications. Another novelty is the I-Spec EV mounting option for integrating a shifter with even more adjustment options. The one-piece aluminium brake callipers with 2 ceramic pistons stand for reliable Ice-Tech brake power, stability and low weight and can be bled very easily using One Way Bleeding.


Series: XTR M9100
Application: Cross Country
Type: hydraulic, 2 pistons
Actuation: mineral oil
Hose: SM-BH90-SS
Hose Length (Front/Rear): 1000 mm/1700 mm

Technical Information - Caliper:

Caliper Mount: post mount
Pads: resin
Design: 1-piece
Calliper Material: Aluminium
Piston Material: Ceramic
Hose Connection: straight

Technical Information - Lever:

Lever Length: 2-finger
Adjustment Options: reach adjust (with tools)
Mount: clamp (split), I-Spec EV
Design: right (side-specific), left (side-specific)
Brake Lever Material: Carbon
Brake Lever Housing Material: magnesium
Hose Connection: straight


Mounting Position:
- front brake caliper: brake lever left
- rear brake caliper: brake lever right
Brake Rotor: 140 mm, 160 mm, 180 mm (recommended: RT-MT900)
Pads: organic and sintered; with narrow pad shape; standard brake pads (no Ice-Tech)


Brake Caliper:
- highly stiff brake hose and one-piece aluminium brake calliper
- 10 % stiffer than M9000 even at high temperatures
- 2 ceramic pistons
- painted
- titanium bolts (4 mm)

Brake Lever:
- higher braking force with less effort on the fingers and extremely linear reaction to the lever movement
- braking force, lever travel and reaction time 30 % lower compared to M9000
- updated brake lever shape
- faster brake response with shorter idle travel
- greater flexibility and action-optimised cockpit layout
- rotation adjustment angle for compatible shift lever: 60°
- funnel venting with M5 funnel
- lever and body painted, aluminium clamp bolt (anodised)


I-Spec EV
I-Spec EV describes a variant of the connection between brake lever and shifter in MTB drivetrains. This type of mount allows the shifter to be adjusted both horizontally and vertically in relation to the brake lever and keeps the cockpit tidy by reducing the number of clamps needed. 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 is a technique used on the brake calliper that makes it easier to bleed the brake. 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 hose connection system for hydraulic brakes on internally routed hoses so that you can install your brake quickly and easily. The brake hose does not come connected to the brake to facilitate the 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-M9100JLFPRA100 + I-M9100JRRXRA170


- 2 x Shimano XTR BR-M9100 + BL-M9100 disc brakes, front & rear
- 1 x Shimano SM-BH90-SS brake hose, 1000 mm (front)
- 1 x Shimano SM-BH90-SS brake hose, 1700 mm (rear)
- 2 x pair Shimano brake pads, resin
- 2 x inserts
- 4 x calliper bolts
- 2 x olives (assembled)
- ready for installation, filled, bleeding is recommended after installation

Order Together:

- Adapter for PM non-direct mount and IS mount
- TL-BH61 tool for insert installation


  • grey/set (front+rear), in stock

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