You will have to order it from Honda. Since two of the pipes are different sizes, one large to small, the other, small to small, etc.
I've searched for brass, plastic, etc. to no avail.
If you go to the parts diagram, and look for yourself, the part you need is #1, the diagram can be confusing because the hoses are not placed where they are on the motorcycle, but above and in front to allow them to fit into the picture. The Joint R water fitting is the aluminum fitting that is bolted to the block that connects the water hoses from the T-stat housing, and one of the small hoses goes to the back of the engine by the oil filter.
If you PM me a contact number, I will call you in the morning and explain in more detail and talk you through the parts diagram.