Brake caliper Shimano BR-MT420 hydraulic 4-piston Post Mount

This is a hydraulic disc brake caliper on its own, without a lever or hose, so it suits you as a replacement or an upgrade for an existing Shimano brake. Four pistons deliver about 20% more braking power than the equivalent 2-piston caliper.

The larger pad area spreads heat better, so braking stays consistent on long descents. It works as either a front or rear caliper, comes with D03S resin pads fitted and also accepts D02S metal pads for heavier or e-bike use.

Technical data

• Type: Hydraulic disc brake caliper only (front or rear)
• Pistons: 4 (2 pairs, opposed)
• Mounting: Post Mount
• Caliper body: Aluminium, painted
• Piston material: Resin
• Brake pads included: D03S resin
• Alternative pads: D02S metal
• Hydraulic fluid: Shimano mineral oil
• Rotor sizes: 140-203 mm
• Colour: Black
• Manufacturer code: EBRMT420MPRXL
• EAN: 4550170443450

Note that the brake lever and hose are not included, and the brake needs bleeding with Shimano mineral oil after fitting. If you are unsure about compatibility, get in touch with us.