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Shimano

Shimano BL-MT401/BR-MT420 4-Piston Hydraulic Disc Brake Set Left/Right/Set-Bulk

Shimano BL-MT401/BR-MT420 4-Piston Hydraulic Disc Brake Set Left/Right/Set-Bulk

$52.99 USD
$0.00 USD $52.99 USD
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Brake Set
SHIMANO BL-MT401 / BR-MT420 4-PISTON HYDRAULIC DISC BRAKE SET
HIGH-POWER 4-PISTON CALIPERS WITH SLIM BL-MT401 ERGONOMIC LEVERS FOR TRAIL, ENDURO & E-MTB — AVAILABLE FRONT, REAR & FULL SET (OEM BULK)
Tackle aggressive trails and heavy-duty riding with confidence using the genuine Shimano BL-MT401 / BR-MT420 Hydraulic Disc Brake System. By pairing the slim, 2-finger BL-MT401 aluminum brake lever with the powerful BR-MT420 4-piston caliper, this setup delivers 20% more stopping power compared to standard 2-piston MT200/MT400 systems, along with faster initial pad contact and reduced rotor noise. Available as an assembled front brake (1000mm hose), an easy-routing J-Kit rear brake (1700mm hose), or a complete front + rear performance set.
FEATURES
  • High-Power 4-Piston Caliper (BR-MT420): Features four ceramic pistons for greater stopping power, consistent heat dissipation, and superior braking modulation on steep descents.
  • Ergonomic Slim Lever (BL-MT401): Anodized 2-finger aluminum lever designed specifically for smaller hands and tight handlebar cockpits with adjustable reach.
  • Easy Frame Routing (Rear J-Kit): Rear brake comes in a disconnected J-Kit setup (pre-bled lever and hose with pre-installed olive) for effortless internal frame routing before quick connection.
  • Pre-Bled Front System: Front brake arrives fully assembled, pre-bled, and ready to bolt directly onto your fork out of the box.
  • Resin Pad Included: Comes fitted with organic resin pads for quiet operation and immediate bite response.
  • OEM Workshop Packaging: 100% authentic Shimano quality supplied in economical bulk packaging without retail box markups.
  • Brand: Shimano
  • Brake Lever Model: BL-MT401 (Slim 2-Finger Lever)
  • Caliper Model: BR-MT420 (4-Piston Hydraulic Caliper)
  • Brake Type: Hydraulic Disc Brake
  • Fluid Type: Shimano Mineral Oil
  • Hose Lengths: Front Left ~1000mm / Rear Right ~1700mm
  • Configuration Options:
    • Front Left (1000mm): Pre-bled & Fully Assembled
    • Rear Right (1700mm): Disconnected J-Kit for Internal Routing (Pre-Bled)
    • Front + Rear Set: Includes both Front 1000mm and Rear 1700mm J-Kit
  • Brake Pad Type: Resin Pads (D03S / NO3A / B05S-RX compatible)
  • Mount Type: Post Mount (IS Mount adapters sold separately)
  • Packaging: Genuine Shimano Workshop / OEM Bulk Packaging
Q: What is a "J-Kit" (Easy Hose Connection System)?
A: The rear brake comes as a J-Kit setup where the brake lever is pre-bled and capped, and the hose has an olive pre-installed. This makes it extremely easy to route the hose internally through your bike frame before connecting it to the lever without spilling oil or needing a full bleed in most cases.
Q: How much more powerful is the BR-MT420 4-piston caliper compared to 2-piston brakes?
A: The BR-MT420 4-piston design offers approximately 20% more braking power and increased pad wear resistance compared to standard 2-piston models like MT200 or MT400, making it ideal for Trail, Enduro, and E-MTBs.
Q: Are disc rotors and frame mounting adapters included?
A: No, this listing includes the pre-filled brake lever, hose, and 4-piston caliper with pads. Rotors and post-mount adapters are sold separately.
  • Processing Time: Ships within 24–48 hours from our California warehouse.
  • Delivery Time: Standard shipping usually arrives within 3–7 business days across the US mainland.
  • Tracking: Tracking information will be emailed immediately once your package is dispatched.
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