Anyone know where I can purchase a Campangolo Record inner pulley cage?
From your Campagnolo dealer, if it´s a never group, say 2005 to present.
Try bolting your pulleys directly to the outer cage, removing the need for an inner cage entirely. Fit washers that clamp the bushes, but don't touch the jockey wheels, and you're sorted. It's lighter, more aerodynamic, and makes cleaning jockey wheels a doddle.