In 1982, the year our company was founded, we searched for the perfect neck wood and found the West-African tone wood Wenge. This dark-brown-colored wood species sports not only a beautiful look and a great-feeling grain, but also excellent stability. As a result, Wenge has proven to be the perfect wood to utilize with the high tension of bass strings.
http://warwick.de/en/Warwick---Company--Our-unique-instruments--Our-necks-and-fretboards--Our-Wenge-Necks.html