These are new Fork Stanchions to fit Kawasaki Z1R, Z1000A2 / A3 / A4, and Z1000 LTD (B1-B4). Dimensions are: Diameter 36mm; length 609mm; Thread size M28x1.0 mm. Shuttle valve is included. Due to availability issues with these valves some will be circlip retained. Any Questions please call me on 07831 342590