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MarkSouth
Sveinung
I know there are a few (past) Principia owners on here. The Danish bike brand made some very nice aluminum frames in the late 90s to middle 00s -- many if not all in Denmark up until they went bust sometime in 2006 (?). The brand still exists today, but they now make frames in China or somewhere else.
I've just come into possession of two frames, one 2001 RS6 Pro and one 2005 RS6 Pro (REX Pro with 6 cm sloping toptube geo, if I understand correctly), the former with paper-thin downtube walls and a cracked driveside dropout, the latter a replacement frame (I guess) with slightly thicker tubing and a few items short of completion.
The 2001 models came standard with a Chris King headset, and was available with Tune - Open Pro wheels, or, like mine, Ksyrium SSC clinchers. The 2005 has a Principia-branded headset, and is equipped with the 2001-model 10s Campagnolo Record with the nice carbon cranks.
From their catalog: