A common question i get asked is "how do i pack my cylinders".
Its very important to pack your cylinders individualy in a seperate box. Doesn't matter if there are 1,2 or 3 cylinders, the packing must be tight so parts will not move around during shipping. Use extra cardboard to line the box. Also, use bubble wrap or the preferred news paper to wrap the cylinder in its individual box. Make sure the 'main' box is slightly bigger than the smaller boxes so you  can use peanuts or cardboard as a filler.

Next important issue is to remove any exhaust flange bolts that might stick out.
These are very important steps to insure your parts will get delivered safely.

Example pics below for a 3 cylinder application.