For aggressive enduro and trail riders who just can't get enough, the Deore BR-M6120 Brake Caliper uses full braking performance to ensure your safety on a ride. This 4-piston caliper has a lot of stopping power, but that doesn't mean it weighs a ton. Its aluminum construction and quick piston retraction gives you the power you need to increase your confidence on especially challenging rides. Ice cooling technology addresses the issue of fade to achieve consistent performance, and the clad disc brake rotor blade and radiator fin provide long pad life, less noise, less fade and fewer grams. One-way bleeding technology makes for a clean and easy bleeding system so you can carry the deed out without leaving any air bubbles behind.