Shimano SLX SM-RT70-SS disc rotor with a diameter of 140mm and a Center Lock mounting type.

The Ice Technologies technology plays a key role in reducing temperature when trail conditions become more demanding.

The first upgrade for riders needing better brake performance comes from choosing a better combination of rotors and pads.

The larger the diameter of the rotor, the longer it takes to complete a cycle at the same contact point with the pad.

Thus, the same spot on the rotor has a chance to cool down better before passing again through the friction with the pads that will add more heat to the metal.

SHIMANO's Ice Technologies technology provides better and faster heat dissipation, thanks to the triple coating that it has:

• The two outer surfaces are made of steel, for durability and resistance to potential abrasions.
• The third layer, in between the side layers, is made of aluminum which is a good heat conductor and connects with the rotor's spokes.
• The addition of aluminum significantly contributes to rapid temperature reduction, resulting in better performance across the entire disc brake system.