Ducati Performance one for 916/996 family fit - if you use the top and bottom mounting holes - but they give quite a high foot position. i raced with these but reverted to standard pegs towards the end of this season.
I also have a set of Fast by Ferachi rearsets specifically for the 620SS - these give a slightly higher foot position than standard. However one of the knurled foot pegs is missing (busted in a get-off last year).
Otherwise I found rearsets for the injected SS family to be a bit thin on the ground!