Shimano Acera M396 Hydraulic Disc Brake - Rear Right Hand LeverShimano M396 Hydraulic Disc Brake Rear Right Hand Lever The Shimano Acera disc brake is the most powerful hydraulic disc brake in its class. This Shimano Acera disc brake is a solid durable system that is capable of delivering respectful amounts of stopping power to any mountain bike. The smooth moving break lever lets you apply exactly the right amount of stopping power. With a durable construction, this Shimano Acera disc brake is made for regular