Looking at the part it seems that it was first cast from a mold with a block of raw material left in order to machine the spindle shaft and flat mounting surfaces from that. What with all the aluminum cast spindles and A-arms/wishbone set ups in today's cars, I would have thought that the original Trick Titanium facility back during the hey day could have cast it and machined it out of the Ti stuff. They probably did for the late Don Carlton and the boys for sure. I know of certain carbon fiber brake disc equipped cars out there. Mu$t be E$$$pensive. Formula 1 territory. By the way, there are some subtle but unique ideas in those Formula One magazines. I peep 'em all. Talk about high end Titanium companies peppered around the UK.
