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: 240mmI.D: 118mmMinimum Thickness: 2.5mmDisc Position: Front Left Fits: Honda CRF150F 2003-2005 2007 2009-2020 CRF230F 2003-2020 SL230 1997-1999 XL250S DEGREE 1995 XR250L 2000 2003 2005-2007 XR250R 1993-2004 XR400R 1996-2004 XR600R 1991-2000 XR650R 2000-2006