hi,

if it is r5k it doesn't fit.
i had the opposite problem.
mc18 with broken side fairings. A friend gave me a pair of mc16 fairings but they didn't fit.
i had to cut them because the angle at the point of connection is different.
My bike was an r5k, and i think that r2j has some differences.maybe it is possible to fit an r2j v-piece.

jim