Hydraulic brakes are a real nicety on any electric bike. They do not need constant adjustment like regular mechanical brakes do. They require very little hand pressure to activate, you can stop with two fingers easily even if your fingers are wimpy. These brakes are made by Shimano. Comes with one disc brake adapter if needed Shimano M365 Altus Disc Brakes (Front/Rear Set) Black Shimano BR-BL-M365 MTB Hydraulic Disc Brakes Set Pre-Bled Front and Rear Replaces BR-BL-M355 Very reasonable hydraulic disc brake in proven Shimano quality, ideal for use with components of the Acera and Altus group.