Shimano N04C brake pads are sintered metal brake pads with cooling fins. As with all Shimano metal brake pads, the focus here is on stability and long service life. In addition, the Ice Tech cooling fins dissipate heat generated during braking better. The N04C brake pad is compatible with the XTR BR-M9120 4-piston disc brake and XT BR-M8120 and SLX BR-M7120.