Description - GALFER front brake disc made of high quality stainless steel. - Incorporates wave exterior design and large braking area. - Standard fixing system (ISO standard) with 4 screws. - Includes perforations in the braking area to help reduce weight and provide direct braking. - NOTE: Use only on the front. Applications - Montesa 4RT 2005/2019 Material -Stainless Steel Sizes - Outer diameter: Ø183.8mm - Inside diameter: Ø67mm - Thickness: 3.5mm Weight - 250g Finish - Silver with laser engraved GALFER logos. Additional information It is recommended a running-in of the brake disc for a few hours before starting to practice trial. In this way the disc and the pads should be heated gradually to a temperature that allows the transfer of material from the pad to the friction surface of the disc.