Shimano IBRM9120MPMF Hydraulic Post-Mount Disc Brake Caliper

Actuation Hydraulic
Brake Fluid Mineral Oil
Mount Type Post-Mount
Position Back, Front
Pistons 4
Compatible Brake Pad Styles Shimano Deore XT/Saint - #50, Shimano Deore XT/Saint Cooling
Resin Pads Only No
Brand Shimano
Model Number IBRM9120MPMF
UPC 689228869936
Color Gray
ebike-Friendly?
Weight 262 grams
Intended Use

Click to see all known products that are interchangeable with this product. For disc brake calipers we use pad's mount type, actuation, and brake fluid type (if hydraulic) to narrow the selection to interchangeable parts. Other factors like weight, brand, and price are not relevant to compatibility. This is designed to help you quickly find replacement parts that will fit.


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The Shimano XTR BR-M9120 disc brake caliper is a top-tier component in Shimano's lineup, engineered for both front and rear applications. It features an innovative MONO-BODY design, precision machined from a single block of material to achieve maximum rigidity, which is essential for consistent, high-performance braking.

Equipped with four ceramic pistons, the caliper offers exceptional stopping power tailored to the rider's needs. This design ensures a high level of heat resistance and a responsive braking feel. Compared to its predecessor, the BR-M9000, the BR-M9120 achieves a 30% reduction in time lag and a 10% increase in braking power over the BR-M9020 model, indicating significant advancements in brake engagement and overall performance.

The caliper utilizes a banjo-type connection for the hydraulic hose, which allows for flexible routing within the bike frame, contributing to a cleaner and more aerodynamic profile.

Included with this caliper are Shimano's N04C-MF metal finned brake pads, renowned for their excellent heat dissipation properties, which help to maintain optimal braking performance during long descents and in high-temperature conditions.

The system operates with mineral oil hydraulic fluid, chosen for its stable performance characteristics and low maintenance. With a weight of approximately 262 grams, the XTR BR-M9120 caliper is both lightweight and durable, without including a rotor to provide riders the option to select one that best fits their riding style and bike specifications.

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