QUOTE (getset @ Apr 7 2012, 04:01 PM)
Bill is correct. I bought a set when they first came out circa 1981 and have since bought a couple more pair, one set stamped and the other non-stamped. There is a kind of greyish pigment swirl on both that should be noticable. They also don't seem to have the same flex as non-graphite z-rims.
The stiffer ride is due to the carbon fibers. They were mixed in and the cross ply will "tighten" the zytel to make it flex less.
Peregrine tried to market Peregrine Master Graphite wheels in colors using the term "Graphite" for marketing. and Skyway went after them on the fact that you cannot make a colored granite composite. Add color and you'd end up with mud, hence why Graphites are "black".