pressurized salt water seems to be very effective. It is mildly abrasive and the brine is able to get into any and all places, no matter how inaccessible they might seem to be.

plus, if you are having a margarita while cleaning the bike...

05 speedmaster - 1100cc, 11:1 racing pistons, Carillo rods, thunderbike cams, ported and polished head, 2mm over intake and exhaust valves, Barnett kevlar clutch, scepter pipes, oversize manifolds, 45mm HSR's, TTP stage 4 firestarter