Quote:
Originally Posted by Esoteric
Thats Rotomolded plastic, absorbs less heat and is also more costly to make than "metal tube". Sounds good and looks clean- won't corrode either.
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Rotomolding also allows the designer to make complex shapes that you can't do with off the shelf materials. It does require some up front costs to make the molds, but it's well worth it to get parts that fit like a glove and look like they belong in the engine bay.