Your question is very general and difficult to answer or even comment on without a lot more information about what you're trying to do. From what you've posted, I don't see need for classes for the components. Maybe a trailer class with enum properties built from the tables, like Trailer.BumperType = BumperType.ChromeWithPlayboyEmblem

if your components are only features/parts that go on a trailer (properties), and you don't need to act on them (like Bumper.IncreaseAlloyHardnessToImproveCrashResistance("15mph")), then I don't see the need for classes.

Just a thought. If you have any specific question I'm sure you'll get responses from people much more knowledgeable than I. Good luck!