... if you haven't ordered your axle caps yet, you're missing a good trim piece.
As others have already stated, they're standard on the newer roadsters being built. The MSRP: A total of $7 and change including tax. Part numbers 705501022 and 705501081 as was mentioned in another thread by the pioneer. Thanks!
I suggest you also dab a little RTV on the inner stems so you don't lose them on a spirited ride.