Wilderness Systems Phase 3 AirPro Seat Back Spine

Replacement seat back spine for Wilderness Systems kayaks with Phase 3 AirPro, AirPro SOT and AirPro Tour Outfitting. The spine connects the seatback to the seat bottom.

Phase 3 AirPro outfitting is common in modern Wilderness Systems Tsunami kayaks 2012 to date. This kit fits Wilderness Systems Phase3 seat bottom structures with a cavity moulded to accept the seat back base. The base of the Phase 3 Spine is 4 and 13/16 inches wide. The nipples on the sides of the spine base are about ½ inch in diameter, protruding about ½ inch. The nipples on the sides fit into holes in the seat base cavity on the rear.