BR-M6120 REAR DISC BRAKE J-KIT DEORE BL-M6100 LEFT LEVER

With a strong, 4-piston design, the Shimano MT520 hydraulic disc brake boosts rider confidence and enjoyment.
Deore – 4-Piston – Hydraulic Disc Brake Calliper – MTB

Features
• Wider contact area of dual diameter opposed-piston design
• Four Piston Calliper
• Rapid initial pad contact and controllable brake power modulation
• Sleek and durable master cylinder design
• Heat insulated pad and piston
J-Kit
J-Kit is a simple hose connection system for hydraulic brakes on internally routed hoses so that you can install your brake quickly and easily. The brake hose does not come connected to the brake to facilitate the 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.
Servo Wave
When you pull a Servo Wave 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.
One-Way-Bleeding
One Way Bleeding is a technique used on the brake calliper that makes it easier to bleed the brake. 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.
Four Piston
Disc brake system with the dual diameter opposed-piston calliper 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 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 calliper 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.