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: 220mmI.D: 105mmMinimum Thickness: 4.5mmDisc Position: Rear Fits: Triumph DAYTONA 600 2003-2004 DAYTONA 650 2005 DAYTONA 675 2006-2012 DAYTONA 955i 1998-2006 DAYTONA T595 1997-1998 SPEED 94 2015-2017 SPEED 94R 2015-2017 SPEED FOUR 2002-2005 SPEED TRIPLE 1050 2005-2010 SPEED TRIPLE 955 1999-2004 SPEED TRIPLE T509 1997-1999 STREET TRIPLE 675 2007-2012 STREET TRIPLE R 675 2009-2012 TT600 2000-2003