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: 300mmI.D: 105mmMinimum Thickness: 4.5mmDisc Position: Front Left or Right Fits: BMW F650CS 2001-2005 F650GS (650cc) 1999-2007 F650GS (800cc) 2008-2012 F650GS DAKAR 2000-2007 G650GS 2008-2016