To increase the braking power of your MTB you have few alternatives: if the pads are in excellent condition and the oil has been changed recently, the discs could be "tired" or undersized for the use to which they are subjected. Between design, colors and materials there is a wide choice of replacement brake discs to improve the performance of your bicycle. Those who put efficiency first will focus on Shimano discs equipped with Ice Technology or Freeza profile, the non plus ultra as regards pure performance. Those looking for lightness at all costs will instead focus on the lightweight Ashima MTB brake discs or on the two-piece composite ones.