Shimano Acera BR-MT420 Rear Hydraulic Disc Brake with Left Lever 4-Piston

Introduction

About Shimano Acera BR-MT420 Rear Hydraulic Disc Brake with Left Lever 4-Piston
The Shimano BR-MT420 caliper and BL-MT401 lever provides consistent braking performance and reliable stopping power in all conditions. The 4-piston caliper instills greater downhill confidence and control.

Specifications
90% braking power vs. BR-MT520

20% increase braking power vs. current 2-piston BR-MT400

150% better wear-resistance vs. current 2-piston BR-MT400

Combination with BL-MT401

About Shimano
Shimano is a Japanese multinational manufacturer founded in 1921 by Shozaburo Shimano. They are well known as the largest bicycle component manufacturer in the world with their main manufacturing plants in Kunshan, China; Malaysia; and Singapore. Along with cycling components they also produce fishing tackle, and rowing equipment.