I didn't find a bearing in 123 Bearing's ceramic line that match the specs needed — 20 mm inner, 47 mm outer, 23.812 mm thickness for the double-row bearing. I've contacted 123 to inquire whether they can provide one with those specs. Admittedly, I'm flailing, trying to avoid laying out an exorbitant chunk of change to LN Engineering for their Retrofit.

Michelle