when I chatted to the guy on live chat, he said that the endurace stem was slammed right down as seen in the pic.... and he said that they could not leave a few inches extension. If he said they could, I would have bought it there and then
The bike my mate bought was an Ultimate CF SLX 9.0 AERO, which BTW has a "slammed" stem on the Canyon web page, but in the pictures he posted to Facebook of it, clearly has 30mm of spacers.