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: 320mmI.D: 180mmMinimum Thickness: 4.5mmDisc Position: Front Left or Right Fits: BMW HP2 ENDURO 2004-2006 K1200GT 2002-2005 2007-2008 K1200LT 2000-2003 K1200LT ABS 2001 2003 K1200R 2005-2008 K1200R SPORT 2007 K1200RS 2001-2005 K1200S 2005-2008 K1300GT 2009-2011 K1300S 2009-2017 R1150R 2001-2006 R1150R ROCKSTER 2002 R1150R Rockster 2003-2006 R1150RS 2000-2004 R1150RT 2000-2006 R850R 1995-2007 R850RT 2000-2006