About the product
Shimano DEORE BL-M4100 / BR-MT420 Hydraulic Disc Brake – 1000 mm (Front)
The Shimano DEORE BL-M4100 brake lever (2-finger) combined with the BR-MT420 4-piston caliper delivers powerful, precise braking performance that fits seamlessly into the DEORE M4100 component lineup.
Key Features
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Strong and intuitive braking with 4-piston caliper
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Quick response with shorter free stroke
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Optimized ergonomics with 2-finger brake lever
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Increased stiffness thanks to an additional contact point on the lever
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Easy maintenance with One-Way Bleeding system
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I-Spec EV compatibility (mount shifter directly on the brake lever)
Technical Specifications
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Use: MTB
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Group: Shimano DEORE M4100
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Model: BL-M4100 / BR-MT420 (front)
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Brake type: Hydraulic disc brake
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Brake lever: BL-M4100, 2-finger, left side, open clamp
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Mounting system: I-Spec EV (not compatible with I-Spec II or I-Spec B)
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Reach adjustment: Yes (with tool)
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Caliper: BR-MT420, 4-piston, Postmount
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Brake pads: D03S Resin (without cooling fins)
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Brake hose: SM-BH90-SS, front 1000 mm (shortenable)
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Hose connection: Straight (lever & caliper)
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Bleeding: One-Way Bleeding
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Brake fluid: Mineral oil (eco-friendly, non-toxic, non-corrosive)
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Recommended rotors (sold separately): SM-RT64, SM-RT66 (140, 160, 180, 203 mm)
Materials
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Lever: Aluminum
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Caliper: Aluminum
Color
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Black
Weight
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Approx. 297 g (without rotor and adapter)
The scope of the package
1x Shimano DEORE BL-M4100 / BR-MT420 Hydraulic Disc Brake – 1000 mm (Front)