Shimano Altus hydraulic disc brake and lever sets feature an entry-level design that's ideal for beginner riders and riders with smaller hands. - The brake lever's versatile design matches numerous bike styles - Braking power is adjusted for entry-level riders - Pre-bled brakes for easy, quick, and clean installation

Shimano Acera disc brake and lever sets feature a sleek design inherited from MTB racing components. They offer a balanced braking power suitable for entry-level MTB riders. - BR-MT400 disc brake caliper features 2 pistons for consistent braking power - Brakes are pre-bled - Includes resin brake pads