NOT TRUE!!!
Chris explains it pretty well in the trans section. TCS and the rest of us are having trouble suppling cores. To ship cores has become expensive which nobody wants to pay. We are making both but on the billet ones , they have a better clutch setup.
Both are still available, but do not be surprised to see the stock backed one go up a little in price.
Both are very reliable, very durable, and work well.
You cannot go wrong either way.
Bruce
WE4
PTS XTREME