Shimano BR-MT420 + BL-M4100 Disc Brake Set J-Kit

Name: BR-MT420 + BL-M4100 Disc Brake Set J-Kit
Brand: Shimano
SKU: 77740
Availability: InStock

Item number: 77740

BR-MT420 disc brake set by Shimano - convincing braking power

The BR-MT420 disc brake by Shimano is also available as a set for front and rear . It delights Enduro riders with its strong braking power - thanks to the 4-piston brake calipers. On the lever side, 2-finger brake levers are used, whose rear can be adjusted by means of a bolt. The brake levers are mounted to the handlebars with a split clamp, which also allows the combination with matching I-Spec EV shifters. Funnel bleeding and One-Way Bleeding technology, which prevents air bubbles from remaining in the caliper, make maintenance easier. As a J-Kit, this brake set is delivered in such a way that you can install it easily, even if the brake hoses on your bike are routed internally.

Specifications:

Application:: All Mountain, Cross Country, Enduro, City & Touring
Type:: hydraulic, 4 pistons
Actuation:: mineral oil
Hose:: SM-BH90-SS
Hose Length (Front/Rear):: 1000 mm/1700 mm

Technical Information - Caliper:

Caliper Mount:: post mount
Pads:: resin
Design:: 2-piece
Calliper Material:: aluminium
Piston Material:: resin
Hose Connection:: straight

Technical Information - Lever:

Lever Length:: 2-finger
Adjustment Options:: reach adjust (with tools)
Mount:: clamp (split), I-Spec EV
Design:: right (side-specific), left (side-specific)
Brake Lever Material:: aluminium
Brake Lever Housing Material:: aluminium
Hose Connection:: straight

Compatibility:

Mounting Position:

front brake caliper: brake lever left
rear brake caliper: brake lever right

Pads:: organic and sintered; with narrow pad shape; standard (no Ice-Tech)
Brake Rotor:: 140 mm, 160 mm, 180 mm, 203 mm, 220 mm (recommended: SM-RT30, SM-RT54, SM-RT56, SM-RT64

Features:

Brake Caliper:

90% of the braking power of BR-MT520
20% more braking power compared to the BR-MT400 2-piston version
150% better wear resistance compared to the 2-piston version BR-MT400
resin pistons
painted
steel bolts (5 mm)

Brake Lever:

intuitive operation and high braking power
faster brake response with shorter idle travel
additional contact point enables stiffer lever
I-Spec-EV compatible: 10-degree rotation angle for compatible shift lever
funnel venting with M5 funnel
anodised lever, painted body
stainless steel clamp bolts

Technology:

I-Spec EV
I-Spec EV describes a variant of the connection between brake lever and shift lever on Shimano MTB derailleurs. This type of mounting allows the shifter to be adjusted both horizontally and vertically in relation to the brake lever, and ensures a tidy cockpit by reducing the number of clamps required. Compared to I-Spec and I-Spec II, I-Spec EV offers a much wider adjustment range. 14 mm adjustment range the longitudinal direction and up to 60° rotation allow an optimal ergonomic adjustment to your riding style, your sitting position and your anatomy.

One-Way Bleeding
One Way Bleeding is a technique used on Shimano calipers that facilitates brake bleeding. The hose routing has been optimised so that no air bubbles remain in the brake calliper. In combination with the funnel, the brake can be bled cleanly and easily.

J-Kit
J-Kit is a simple line connection system for hydraulic brakes from Shimano, so that you can install your brakes quickly and easily. The brake hose does not come connected to the brake to facilitate routing of the hose in the frame. The brake hose is already filled with oil in the J-Kit and sealed with a thin membrane. There is a small pin in the J-Kit brake lever that pierces this diaphragm during assembly to allow oil to flow.