-
Not sure, I just run the front one with the standard rear. They do rear mudflaps generally, I have them on other bikes, but I don't know for sure how they would sit given the slightly more horizontal angle of the rear mudguard where it finishes. On larger-wheeled bikes they drop nice and vertical from the end of the guard.
They're only cheap though so if you're ordering the front you could give a rear one a go.
That looks ideal, do they have one that matches for the back or if I buy 2 will they fit?