The undertail and RSS are from www.speed-of-color.de, they make really nice (unpainted) parts but are quite expensive. Stateside riders will have to add some extra shipping costs as well.
But totally worth it! It gives the bike a whole new look if you ask me.
The undertail from ASB is an Ermax undertail from france, I think the SOC one has a 'cleaner' look to it.