320mm (12.6") OD. Open center, 170mm. 5 x 15mm x 15.7mm elongated mounting holes. Mount hole to hole distance 117mm. Fits OEM cast wheels. Mount style 'L'. 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. - Stainless - Thickness: 6 mm - Rigid disc - Pitch 202mm - 170mm ID - Comes with approval - OEM replacement reference 41500184. 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.