For your info these Rotors are for Opel Omega B 286x24mm and will be an exact fit without a Spacer. Same work needed though, enlarge Center Bore and new Holes 5x114,3mm needs to be drilled also. I have used them for 20000Km with Volvo 240 4 Pot Calipers but they will also work with OE Girling 4 Pot Calipers with a minor modification.
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