Shimano BR-MT420 / BL-MT401 Brake Lever And Post Mount Calliper Set

Great value fully bled 4 piston hydraulic disc brake with easily adaptable post-style calliper.

Technology

One Way Bleeding

“One Way Bleeding” was developed for quick and easy prevention of air in our hydraulic system. We have streamlined the oil route throughout the system to prevent air bubbles from being captured in the system.

One way oil routing plus a funnel tool with mineral oil provides an easy and clean bleeding system.

Four piston

Disc brake system with the dual diameter opposed-piston caliper design has differently sized pistons in front and in the rear. The system adopts a power transfer system in which the disc brake rotor is pressed by the smaller sized piston at the entrance of the disc brake rotor intake and also by the more powerful larger sized piston at the back. This prevents the wobbling motion of the disc brake rotor and reduces noises significantly.

The 4-piston caliper also allows a wider contact area for the disc brake rotor while keeping the size compact, and the efficient location of pads is adjusted as necessary to stabilize the pressure. In combination use with the Servowave lever it provides an incredible 50% more stopping power than the previous model. The advanced Saint / Zee disc brake system, which adjusts to accommodate the different braking styles of different riders, offers stable braking power and excellent modulation.

Free Stroke

The distance from initial lever position to pad contact point can be adjusted to suit any hand size, type of riding and individual rider preferences.

Servowave Action

When you pull a Servowave brake lever, initial pad travel is fast, so little lever movement is needed to bring the pads into contact with the rotor. The power multiplication factor then increases rapidly at the pad-to-rim contact so more of the lever stroke is used to apply greater braking power with improved control.

Reach Adjust

Brake lever is equipped with a reach adjust mechanism. The distance from handlebar grip to lever can be adjusted to suit any hand size, type of riding and individual rider preferences.

I-Spec EV

I-Spec EV creates a clean and action-optimized cockpit that provides greater focus and flexibility for a wider range of riders.

• Wider adjustment range allows riders of various styles, preferences and body styles to adjust to the optimal position
• Ergonomic design, quicker lever access, and light operation enhance rider comfort and concentration

With its wider adjustment range, I-Spec EV levers can be adjusted to the optimal position to match a wider range of riding styles (Enduro / XC / etc.), rider preferences and rider anatomies (hand and arm alignment).

I-Spec EV increases brake lever rigidity by moving the brake clamp position inward to create an extra point of contact between the bar and the lever. This additional bracing drastically increases bike control and braking engagement while maintaining space between the clamp and support point for other handlebar accessories.

Features

• Fully bled lever and 4 pot calliper comes without adapters or rotors giving you the freedom to customise to suite your bike
• Can be used with the revolutionary Center Lock rotor system which fits easily to Center Lock compatible hubs; alternatively conventional 6-bolt rotors can be used all in a choice of 160mm, 180mm
• Mineral oil brake fluid is non-corrosive and less hazardous than conventional hydraulic brake fluid
• For use with resin pads only