MTX solid rotors 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 rotor. MTX Rotors provide amazing braking control foryour motorcycle. All MTX rotors are designed and manufactured with world-leading, cutting edge technologies: Precision CNC machined and laser-cut technology Japanese SUS 420 Stainless Steel Replacement for Original Equipment OEM Design; lightening & drill hole patterns Specifications: O.D: 296mm I.D: 184mm Minimum Thickness: 5mm Rotor Position: Front Fits: Honda GL1500 GOLD WING SE 1988-1989 GL1500 GOLDWING A 1988-2000 GL1500 GOLDWING L/SE 1990-2000