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: 245mmI.D: 132mmMinimum Thickness: 5mmDisc Position: Rear Fits: Yamaha MT07 2013-2016 MT07 TRACER 2018-2020 MT07HO 2018-2022 MT07LA 2016-2022 MT09 2014-2022 MT09 GT 2019-2021 MT09 SP 2019-2022 MT09 TRACER 2015-2021 XSR700 2017-2021 XSR900 2017-2021