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XT BR-M8100 Disc Brake
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XT BR-M8100 Disc Brake delivers featherlight control with legendary Shimano power
What Our Gearhead® Experts Are Saying:
“The XT M8100s hit the perfect balance—powerful enough for aggressive trail riding but light and precise for XC. The lever feel is smooth, consistent, and the modulation is so dialed it’s almost intuitive.”
When speed meets technical terrain, the Shimano XT BR-M8100 Disc Brake keeps us in total control. Borrowing features from the elite XTR series, this 2-piston setup delivers smooth, powerful braking in a lightweight design built for precision handling on cross-country and trail rides.
A redesigned lever body improves stiffness and ergonomics, reducing flex under pressure for faster engagement and consistent braking power. The inboard I-Spec EV clamp design keeps cockpit setups clean and efficient, leaving room for remotes and accessories. Add in Shimano’s signature Servo-Wave technology for precise modulation, ceramic pistons for efficient heat dissipation, and finned pads for extra cooling—and you get a brake system that’s as reliable on long descents as it is responsive on tight singletrack.
Details
- Lightweight 2-piston disc brake for cross-country and trail performance
- Redesigned lever offers 10% more stiffness for faster engagement
- Servo-Wave action provides smooth, predictable modulation
- Ceramic pistons and finned pads reduce heat and maintain braking consistency
- I-Spec EV lever mount cleans up cockpit and enhances lever stability
- Compatible with 8100 and 8120 calipers for consistent bike feel
- Shimano’s hallmark reliability ensures performance ride after ride
- Item #SHIU18G
- Lever
- aluminum
- Lever Adjustability
- reach, free throw
- Actuation
- hydraulic
- Caliper
- 2-piston
- Mount Type
- post
- Fluid
- mineral oil
- Rotor
- not included
- Claimed Weight
- 13.8oz (392g)
- Activity
- mountain biking, cycling
- Manufacturer Part Number
- BR8382, IM8100JLFPNA100, BR8383, IM8100JRRXNA170
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Shimano XT BR-M8100 brake reviewBest disc brake for cross-country ridingLightweight mountain bike brake systemShimano hydraulic disc brake featuresDurable brake pads for mountain bikingErgonomic design for optimal controlHigh-performance braking for XC enthusiastsShimano XT 8100 brake lever benefitsTwo-piston design for reliable stopping powerHeat-resistant ceramic pistonsI-Spec EV compatibility for clean setupStiffer lever for improved braking efficiencyLearn more about XT BR-M8100 Disc Brake
