ABE approved. Stainless. 11.5" / 292mm O.D; 56.3mm I.D.; 8.7mm (5/16") counterbored mounting holes with 3.25" bolt circle (48.6mm mount hole to mount hole distance). Mount style ''B''. - Outer diameters 292.0 mm - Inner diameter 56.4 mm - Thickness 5.0 mm - Number of holes 5 - Hole diameter 8.7 mm - Pitch 82.3 mm - Type Fixed Disc - Turning direction Omnidirectional - Speedometer prepared No. Moto-Master brake rotors are manufactured from premium stainless steel; offering superb braking ability and are highly corrosion resistant. CNC machined; laser cut and precision double grinded within the tightest tolerance to eliminate any brake rotor vibration. All Moto-Master brake discs are made in Europe and ABE approved. Note: Check your local MCS dealer or the MCS sales department for exact type of approval and validity on bike model and years on the test report.