Magura's Louise Elite post mount disc brake caliper features their stiff and proven one-piece forged 4-piston design to ensure that every ounce of force is uncompromisingly converted into deceleration. Features optimized seals and the machining that offers particularly reliable piston retractionStiff and proven one-piece forged 4-piston caliper ensures that every ounce of force is uncompromisingly converted into deceleration