Brill thanks

Found some but it's gona cost about £50 for the pair

Think it's prob time for new wheel cylinders too, back brakes seem to be binding intermittently

While I was looking for some i saw mine are prob 17.5mm diameter pistons, they also seem to be available in 19 or 22.2mm. Do you think going for the larger ones would be a good alternative way to calm the rears down? Was thinking the larger piston size would reduce brake effort, as long as they'll fit?