Precision CNC Machined for Powersports Provides amazing braking controls to your powersports vehicles, as it is designed and manufactured with world-leading, cutting edge technologies: - Precision CNC MACHINED and LASER CUT technology - Japanese SUS 420 Stainless Steel - Replacement for ORIGINAL FITMENT All brake disc discs meet or exceed original fitments, and your powersports can be upgraded by choosing different series: SOLID Disc - All Part No. starting with MDS- are solid discs, flat or with offset depending on OEM; - Solid Discs are made of one complete segment of Japanese SUS 420stainless steel and is heat-treated to HRC 36 +- 2 Important Note: Brake discs should only be fitted by a qualified technician. New Disc Pads should always be installed when fitting new discs. Fits: KTM 390 DUKE 2017-2021