The Vulcan Riders Association (VRA) is an owners association for owners of the Kawasaki Vulcan range of motorcycles known in the UK as VN′s or EN in the case of the 400cc and 500cc model. The VN′s span a range of models built around the 400, 453, 650, 750, 800, 900, 1500, 1600, 1700 or 2000cc V-twin engine.