Steve, the rear wheels off those bikes will be 16 inch, as I stated, but if you're stuck for choice, they will bolt straight onto your RH with no mods needed. All the axle spacers, brake caliper brackets are the same.
The gearing will be slightly shorter (about 4 - 500 rpm @ 100kph) but I've found that cornering clearance is no different due to the wider rim width (1/2 inch) that makes the tyre spread slightly wider.
The fronts are tha same size as the RH, so no problems in that area.
The only singular difference is that they are tubeless rims, which is a bit of a novelty over here, but makes trye changing a breeze, especially the rear one with no bead locks do wrestle with.