Don't know about the 412's. But I was informed about the Hagon Nitros when I "un-lowered" my bike. They are very sweet and I have yet to even start playing around with all the adjustments possible. A definite improvement in rideability & comfort right out of the box.

Blue/White 2007 TBA, Thruxton needles, Unifilter, AI removed, Polaris Bellmouth, Bubs, Nology Coils/wires, Lightbar, Ricor Intiminators, Hagon Nitros, Tall Sissy Bar w/luggage rack, Dart flyscreen & Lowers. 130 Mains, TrueGel Battery MG12-BS.