Purchased one 203mm rotor and one 180mm. The 203 came with a fixing washer plus 3 tightening plates as per instructions. The 180 only came with 3 tightening washers although they look slightly different to the ones supplied with other rotor. The instructions show a fixing washer for both but a quick google suggests that the fixing washer is discontinued and not required. Can anyone confirm this? Thanks

I’ve bought and fitted exactly the same rotors before and the same thing came with mine. Don’t worry about it.