ABE approved; stainless; right. 11.8" / 300mm OD.; 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''. Fits OEM or accessory cast & laced wheels with 3.25" bolt circle. All 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 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.