doing a rebuild and the original RD either needs replacing entirely or could salvage in combo with another broken one (i need functioning torsion spring, jockey wheels and potentially a long cage; 'GT' version).
I have 3 cyclone rear mechs,don't know which Mk.All have Cyclone on black background,one has a short mount bolt,the other 2 a longer bolt,one of the 2 is unused. are any what you are seeking?