My Sony buds are not "noise canceling", they are just in ear buds. I know I said noise canceling in my first response but I meant that they plug the canal. I don't have the model #, they are two years old or more so I doubt that the same number would help anyway.
I don't know what you can get that would be better than the foam earplugs that you already buy. I also wear those if I don't want to listen to music on a longer ride and they are great for me, just a low thud from the exhaust. You must have a very loud exhaust, mine is the older ufo and I thought it was loud.
Sorry I can't tell you anymore, I think you might want to PM Huligan and ask him what the name of those earphone are that you mold to the shape of your ear.