MTX solid discs are constructed using one complete segment of Japanese SUS 420 stainless steel then heat-treated to HRC 36+-2. Lightening and drill hole patterns are as per OEM designs to improve braking performance and reduce the temperature of the disc.MTX Discs provide amazing braking control for your motorcycle. All MTX discs are designed and manufactured with world-leading cutting edge technologies:Precision CNC machined and laser-cut technologyJapanese SUS 420 Stainless SteelReplacement for Original EquipmentOEM Design; lightening & drill hole patternsSpecifications:O.D: 275mmI.D: 144mmMinimum Thickness: 3.5mmDisc Position: Front Left or Right Fits: Honda CBR400R Aero 1986-1987 CBR600F 1987-1994 PC800 PACIFIC COAST 1989-1997 VF1000F 1984 VF750S SABRE 1982-1984 VFR400 NC24 1987-1989 VFR750F RC24 1986-1987