The trunk aluminium insert supports the element of the engine and creates sufficient air conditioning and adverts tightness. The leading insert can be used to change flex as required based for each track. The inserts are associated with machined flanged threaded alu nuts from top, therefore the carbon wont harm.
The framework with both inserts is approximately 60 grams lighter versus exact same in aluminium.
Serpent brass loads enables you to position the extra weight in favored places.